Filed by Swift Transportation Co., Inc.
                                                     Commission File No. 0-18605

                       Pursuant to Rule 425 under the Securities Act of 1933 and
  deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934

                                            Subject Company: M.S. Carriers, Inc.
                                                     Commission File No. 0-14781

                                                            Date: April 20, 2001

         Certain   information  in  this  filing  consists  of   forward-looking
statements within the meaning of the Private Securities Litigation Reform Act of
1995. Such statements  include,  but are not limited to,  statements  concerning
Swift's projected earnings and financial  performance,  recent trends in freight
demand, Swift's ability to recruit and train qualified drivers, anticipated fuel
prices,  the proposed  acquisition  of M.S.  Carriers,  expected  synergies  and
forecasts  regarding the integration of M.S. Carriers'  operations with Swift's,
and other  information.  Such  statements are based upon the current beliefs and
expectations  of Swift's  management  and are subject to  significant  risks and
uncertainties.   Actual   results  may  differ  from  those  set  forth  in  the
forward-looking  statements.  As to Swift's  business and financial  performance
generally,  the following factors,  among others,  could cause actual results to
differ materially from those in forward-looking  statements:  excess capacity in
the  trucking  industry;  significant  increases or rapid  fluctuations  in fuel
prices,  interest  rates,  fuel taxes,  tolls,  license and  registration  fees;
difficulty in attracting and retaining  qualified  drivers and owner  operators,
especially  in light of the  current  shortage  of  qualified  drivers and owner
operators;  recessionary  economic  cycles and downturns in customers'  business
cycles,  particularly  in market  segments  and  industries  (such as retail and
manufacturing)  in which Swift has a significant  concentration of customers;  a
significant  reduction in or termination of the Company's trucking services by a
key customer;  seasonal  factors such as harsh weather  conditions that increase
operating  costs;  increases in driver  compensation to the extent not offset by
increases  in  freight  rates;  the  inability  of Swift to  continue  to secure
acceptable financing arrangements;  the ability of Swift to continue to identify
and combine acquisition candidates that will result in successful  combinations,
including Swift's pending merger with M.S. Carriers,  Inc.;  increases in claims
or the cost of insurance;  and  competition  from trucking,  rail and intermodal
competitors.  With respect to the proposed  acquisition of M.S.  Carriers,  Inc.
these  risks and  uncertainties  include:  the  ability  to obtain  governmental
approvals  of the merger on the  proposed  terms and  schedule;  the  failure of
Swift's and M.S. Carriers' stockholders to approve the merger; the risk that the
businesses will not be integrated  successfully or that  integration  costs will
exceed our  estimates;  the risk that the revenue and other  synergies  and cost
savings from the merger may not be fully  realized or may take longer to realize
than expected;  fluctuating stock market levels; the difficulty the stock market
may have in valuing the business model of the combined  company;  and disruption
from  the  merger  making  it more  difficult  to  maintain  relationships  with
customers, employees or suppliers.

         A discussion  of these and other  factors that could cause  Swift's and
M.S.  Carriers  results  to  differ  materially  from  those  described  in  the
forward-looking  statements  can be found in the most recent  Annual  Reports on
Forms 10-K of Swift and M.S.  Carriers,  filed with the  Securities and Exchange
Commission and available at the Securities  and Exchange  Commission's  internet
site (http://www.sec.gov).  Swift undertakes no obligation to publicly update or
revise any forward-looking  statements,  whether as a result of new information,
future events, or otherwise.  Further,  nothing herein shall constitute adoption
or approval of any analyst report regarding Swift, nor any undertaking to update
or comment upon analysts' expectations in the future.

         The proposed merger transaction between Swift and M.S. Carriers will be
submitted to the  companies'  stockholders  for their  consideration.  Swift has
filed a registration statement on Form S-4 that



includes a joint proxy statement/prospectus.  STOCKHOLDERS SHOULD READ THE JOINT
PROXY  STATEMENT/PROSPECTUS  REGARDING  THE PROPOSED  TRANSACTION  THAT HAS BEEN
FILED  WITH  THE SEC  AND  WILL BE  MAILED  TO  STOCKHOLDERS.  THE  JOINT  PROXY
STATEMENT/PROSPECTUS  CONTAINS  IMPORTANT  INFORMATION THAT STOCKHOLDERS  SHOULD
CONSIDER.  Stockholders  will be able to obtain a free  copy of the joint  proxy
statement/prospectus,  as well as other  filings  containing  information  about
Swift  and  M.S.   Carriers,   without  charge,   at  the  SEC's  internet  site
(http://www.sec.gov). Copies of the joint proxy statement/prospectus and the SEC
filings   that  will  be   incorporated   by   reference   in  the  joint  proxy
statement/prospectus  can also be  obtained,  without  charge,  by  directing  a
request to: Swift Transportation Co., Inc., 2200 South 75th Avenue,  Phoenix, AZ
85043,  Attention:  Chief  Financial  Officer  (602-269-9700).  Swift  and  M.S.
Carriers and certain other persons named below may be deemed to be  participants
in the  solicitation  of proxies of Swift's and M.S.  Carriers'  stockholders to
approve the transaction.  The participants in this  solicitation may include the
directors and executive officers of Swift and M.S. Carriers.  A detailed list of
the names and  interests  of Swift's  directors  and  officers is  contained  in
Swift's proxy statement for its 2000 annual meeting,  and a detailed list of the
names and  interests of M.S.  Carriers'  directors  and officers is contained in
M.S. Carriers' proxy statement for its 2000 annual meeting.

         As  of  the  date  of  this   communication,   none  of  the  foregoing
participants  individually  beneficially  owns in excess of 5% of Swift's common
stock, or 5% of M.S.  Carriers'  common stock,  except that Jerry Moyes,  CEO of
Swift beneficially owns more than 5% of the common stock of Swift and Michael S.
Starnes,  CEO of M.S.  Carriers,  beneficially  owns more than 5% of the  common
stock  of  M.S.  Carriers.   Certain  employees  of  M.S.  Carriers,   including
participants,  may  receive  accelerated  vesting  of  their  stock  options  in
connection  with the merger in  accordance  with  their  existing  stock  option
agreements.  In addition,  certain officers of M.S. Carriers,  as a condition to
the  closing of the  merger,  will enter into  employment  agreements  that will
become  effective upon completion of the merger. A description of the employment
agreements is contained in the joint proxy statement/prospectus.

         The  communication  filed  herewith is a press  release of Swift issued
April 19, 2001.



                     SWIFT TRANSPORTATION CO., INC. REPORTS
                              FIRST QUARTER RESULTS


Phoenix,  AZ - April 19, 2001 -- Swift  Transportation  Co.,  Inc.  (NASDAQ-NMS:
SWFT) today announced its results for the first quarter ended March 31, 2001.

Revenues for the three months  ended March 31, 2001,  increased  12.3% to $327.4
million, compared with $291.5 million for the corresponding quarter of 2000. Net
earnings  decreased  to $1.2  million  or 2 cents per share,  compared  to $10.7
million or 17 cents per share for the three  months  ended March 31,  2000.  The
gain from the sale of equipment was $960,000 this quarter versus $4.6 million in
2000 as we sold 720 tractors and trailers in the quarter  versus 2,241  tractors
and trailers in 2000.  The lower gain on sale of revenue  equipment  reduced our
2001 results by approximately 3 cents per share compared to 2000.

The waiting  periods  required under the  Hart-Scott-Rodino  Act for the pending
merger  with  M.S.   Carriers   have   expired  and  Swift  has  filed  a  joint
proxy/registration statement on Form S-4 and expects to complete the merger this
summer.

Jerry Moyes,  Chairman and Chief  Executive  Officer,  said,  "As we  previously
announced, the weak freight environment,  which is affecting the entire trucking
industry,  significantly  impacted our  financial  results for the  quarter.  We
continued to gain market share, as revenue grew by 12.3%.  However, net earnings
were impacted by an increased deadhead percentage and decreased utilization.  On
a positive note, in the quarter we experienced  continued  success in recruiting
drivers and a slight reduction in fuel cost per gallon versus the fourth quarter
of 2000."

Swift will hold a conference  call to discuss  these  results at 4:30 PM Eastern
Daylight time on Monday April 23, 2001.  Individuals  with questions may dial in
at 877-888-4210.  For others,  the conference call will be broadcast live on the
Internet at  http://www.streetevents.com/  and may also be accessed  through the
Company's  web site,  http://www.swifttrans.com/.  Replays  will be available on
these websites for one week.

This  news  release  contains  statements  that may  constitute  forward-looking
statements,  usually  identified  by words  such as  "anticipates,"  "believes,"
"estimates," "projects," "expects" or similar expressions.  These statements are
made pursuant to the safe harbor provisions of the Private Securities Litigation
Reform Act of 1995. Such statements include,  but are not limited to, statements
concerning Swift's projected earnings and financial  performance,  recent trends
in freight  demand,  Swift's  ability to recruit  and train  qualified  drivers,
anticipated fuel prices,  the proposed  acquisition of M.S.  Carriers,  expected
synergies and forecasts  regarding the integration of M.S. Carriers'  operations
with Swift's, and other information.  Such statements are based upon the current
beliefs and  expectations  of Swift's  management and are subject to significant
risks and  uncertainties.  Actual results may differ from those set forth in the
forward-looking  statements.  As to Swift's  business and financial  performance
generally,  the following factors,  among others,  could cause actual results to
differ materially from those in forward-looking  statements:  excess capacity in
the  trucking  industry;  significant  increases or rapid  fluctuations  in fuel
prices,  interest  rates,  fuel taxes,  tolls,  license and  registration  fees,
insurance  premiums  and  driver  compensation,  to the  extent  not  offset  by
increases in freight rates or fuel  surcharges;  difficulty  in  attracting  and
retaining  qualified  drivers and owner  operators,  especially  in light of the
current shortage of qualified drivers and owner operators; recessionary economic



cycles and  downturns in  customers'  business  cycles,  particularly  in market
segments and industries (such as retail and  manufacturing) in which Swift has a
significant  concentration of customers;  seasonal factors such as harsh weather
conditions that increase  operating costs;  increases in driver  compensation to
the extent not offset by increases in freight  rates;  the inability of Swift to
continue to secure acceptable  financing  arrangements;  the ability of Swift to
continue to  identify  and combine  acquisition  candidates  that will result in
successful  combinations;  an unanticipated increase in the number of claims for
which Swift is self insured;  competition  from  trucking,  rail and  intermodal
competitors;  and a significant  reduction in or termination of Swift's trucking
services by a key  customer.  With respect to the proposed  acquisition  of M.S.
Carriers,   these  risks  and  uncertainties  include:  the  ability  to  obtain
governmental  approvals of the merger on the proposed  terms and  schedule;  the
failure of Swift's and M.S.  Carriers'  stockholders to approve the merger;  the
risk that the businesses will not be integrated successfully or that integration
costs will exceed our estimates;  the risk that the revenue and other  synergies
and cost savings from the merger may not be fully realized or may take longer to
realize than expected; fluctuating stock market levels; the difficulty the stock
market may have in valuing  the  business  model of the  combined  company;  and
disruption  from the merger making it more  difficult to maintain  relationships
with customers, employees or suppliers.

A  discussion  of these and other  factors that could cause  Swift's  results to
differ materially from those described in the forward-looking  statements can be
found  in the most  recent  Annual  Reports  on  Forms  10-K of  Swift  and M.S.
Carriers, filed with the Securities and Exchange Commission and available at the
Securities and Exchange Commission's internet site  (http://www.sec.gov).  Swift
undertakes  no  obligation  to  publicly  update or revise  any  forward-looking
statements, whether as a result of new information, future events, or otherwise.
Further,  nothing  herein shall  constitute  adoption or approval of any analyst
report  regarding Swift, nor any undertaking to update or comment upon analysts'
expectations in the future.

The  proposed  merger with M.S.  Carriers  will be submitted to Swift's and M.S.
Carriers'  stockholders for their consideration.  Swift will file a registration
statement  on Form S-4 that  will  include a joint  proxy  statement/prospectus.
STOCKHOLDERS  SHOULD READ THE JOINT  PROXY  STATEMENT/PROSPECTUS  REGARDING  THE
PROPOSED TRANSACTION THAT WILL BE FILED WITH THE SEC AND MAILED TO STOCKHOLDERS.
THE JOINT PROXY  STATEMENT/PROSPECTUS  WILL CONTAIN  IMPORTANT  INFORMATION THAT
STOCKHOLDERS SHOULD CONSIDER. Stockholders will be able to obtain a free copy of
the  joint  proxy  statement/prospectus,  as well as  other  filings  containing
information about Swift and M.S. Carriers, without charge, at the SEC's internet
site  (http://www.sec.gov).  Copies of the joint proxy  statement/prospectus and
the SEC  filings  that will be  incorporated  by  reference  in the joint  proxy
statement/prospectus  can also be  obtained,  without  charge,  by  directing  a
request to: Swift Transportation Co., Inc., 2200 South 75th Avenue,  Phoenix, AZ
85043, Attention: Chief Financial Officer (602-269-9700).

Swift and M.S.  Carriers and certain  other persons named below may be deemed to
be  participants in the  solicitation  of proxies of Swift's and M.S.  Carriers'
stockholders to approve the transaction.  The participants in this  solicitation
may include the directors and executive officers of Swift and M.S.  Carriers.  A
detailed  list of the names and  interests of Swift's  directors and officers is
contained in Swift's proxy statement for its 2000 annual meeting, and a detailed
list of the names and  interests  of M.S.  Carriers'  directors  and officers is
contained in M.S. Carriers' proxy statement for its 2000 annual meeting.



As of the  date  of  this  communication,  none  of the  foregoing  participants
individually beneficially owns in excess of 5% of Swift's common stock, or 5% of
M.S. Carriers' common stock,  except that Jerry Moyes, CEO of Swift beneficially
owns more than 5% of the common  stock of Swift and Michael S.  Starnes,  CEO of
M.S.  Carriers,  beneficially  owns  more  than 5% of the  common  stock of M.S.
Carriers.  Certain  employees  of M.S.  Carriers,  including  participants,  may
receive accelerated vesting of their stock options in connection with the merger
in accordance with their existing stock option agreements. In addition,  certain
officers of M.S.  Carriers,  as a condition  to the closing of the merger,  will
enter into employment  agreements that will become  effective upon completion of
the merger. A description of the employment  agreements will be contained in the
joint proxy statement/prospectus.

Swift is the holding  company for Swift  Transportation  Co.,  Inc., a truckload
carrier  headquartered  in  Phoenix,   Arizona.   Swift  is  the  third  largest
publicly-held  national  truckload  carrier in the United  States with  regional
operations throughout the continental United States.

Condensed, consolidated statements of earnings for the three month periods ended
March 31, 2001 and 2000 are as follows:






                 Swift Transportation Co., Inc. and Subsidiaries
                  Condensed Consolidated Statements of Earnings
                                   (unaudited)
                    (in thousands, except per share amounts)


                                                                                Three months ended
                                                                                     March  31,
                                                                             2001                   2000
                                                                             ----                   ----
                                                                                           
Operating revenue                                                         $ 327,411              $ 291,522
Operating expenses:
   Salaries, wages and employee benefits                                    126,542                103,606
   Operating supplies and expenses                                           28,715                 23,754
   Fuel                                                                      46,541                 39,786
   Purchased transportation                                                  57,431                 55,209
   Rental expense                                                            20,178                 14,158
   Insurance and claims                                                       8,898                  8,918
   Depreciation and amortization                                             18,606                 13,644
   Communication and utilities                                                4,393                  3,854
   Operating taxes and licenses                                               9,156                  8,482
                                                                        -----------            -----------
Total operating expenses                                                    320,460                271,411
                                                                        -----------            -----------

Operating income                                                              6,951                 20,111

Interest expense (net)                                                        4,750                  3,000
Other expense (income)                                                          315                   (244)
                                                                        -----------            -----------

Earnings before income taxes                                                  1,886                 17,355
Income taxes                                                                    730                  6,700
                                                                        -----------            -----------

Net earnings                                                              $   1,156              $  10,655
                                                                        ===========            ===========

Diluted earnings per share                                                 $    .02               $    .17
                                                                        ===========            ===========

Shares used in per share calculations                                        64,606                 64,050
                                                                        ===========            ===========



Contact:  Jerry Moyes, President, or Bill Riley, CFO of Swift Transportation
                                 (602) 269-9700








                 Swift Transportation Co., Inc. and Subsidiaries

                              Operating Statistics

                           (Excluding Fuel Surcharge)


                                                                              Three months ended
                                                                                    March 31,
                                                                            2001                  2000
                                                                            ----                  ----
                                                                                        
Total Miles *                                                              259,424               232,048
Loaded Miles *                                                             217,873               199,213
Trucking Revenue *                                                      $  303,334            $  269,099
Revenue per Tractor per day                                             $      471            $      481
Revenue per loaded mile                                                 $   1.3923            $   1.3508
Average Linehaul Tractors                                                   10,072                 8,606
Deadhead Percentage                                                          16.02%                14.15%
Period End Linehaul
   Tractor Count
         Company                                                             8,224                 7,023
         Owner Operator                                                      2,160                 1,908
                                                                     -------------         -------------
                  Total                                                     10,384                 8,931
                                                                     -------------         -------------



* In Thousands

This press  release is being  filed with the SEC  pursuant to Rule 425 under the
Securities Act of 1933.