Exhibit 99.1

[CITIZENS LOGO]                                     [REPUBLIC LOGO]


FOR IMMEDIATE RELEASE

CITIZENS BANKING CORPORATION                      REPUBLIC BANCORP INC.
NASDAQ symbol: CBCF                               NASDAQ symbol: RBNC
Charles D. Christy                                Thomas F. Menacher
EVP & Chief Financial Officer                     EVP, Treasurer, & Chief
(810) 237-4200                                    Financial Officer
Charlie.Christy@cbcf-net.com                      (989) 725-7337
                                                  tmenacher@republicbancorp.com

Kathleen Miller                                   Kristine D. Brenner
Investor Relations                                Director of Investor Relations
(810) 257-2506                                    (989) 725-7337
Kathleen.Miller@cbcf-net.com                      kbrenner@republicbancorp.com

JUNE 27, 2006

            CITIZENS BANKING CORPORATION AND REPUBLIC BANCORP INC.
      ANNOUNCE MERGER AGREEMENT TO CREATE A LEADING MIDWESTERN FRANCHISE

FLINT,  MICHIGAN  AND ANN  ARBOR,  MICHIGAN  ---  Citizens  Banking  Corporation
("Citizens")  and Republic Bancorp Inc.  ("Republic")  announced today that they
have agreed to merge Republic into Citizens to create the new Citizens  Republic
Bancorp in a transaction  currently  valued at  approximately  $1.048 billion in
stock and cash.  Citizens Republic Bancorp will be the 45th largest bank holding
company  headquartered  in the United States,  based on March 31, 2006 assets of
$13.9 billion.

"This exciting  partnership  with Republic is the culmination of the outstanding
results  our   leadership   team  has  achieved  in  completing  the  turnaround
initiatives we established in 2002. It enhances our core markets, sales culture,
product  capabilities,  and credit competencies as well as improves our presence
in attractive, high-growth markets. Most importantly, it positions us to enhance
long-term shareholder value," stated William R. Hartman, chairman, president and
CEO of Citizens.  "Led by a strong  leadership  team,  Republic has a long track
record of consistent financial  performance based on high-touch and high-quality
service, which are also core values of our Vision," added Hartman.

"Republic's  top-notch  management team has built a solid,  focused organization
through consistent growth since we started as a de novo bank 21 years ago. We're
excited  to  join  Republic  with  Citizens  to  create  a  leading   Midwestern
franchise,"  stated Jerry D.  Campbell,  chairman  and founder of Republic.  "We
believe this is an excellent  transaction for our  shareholders and demonstrates
our commitment  since  inception to  continually  increase  shareholder  value,"
continued Campbell.

"We are very enthusiastic about working with the outstanding Citizens leadership
team. Our companies  complement each other in many ways and by implementing  the
best practices from each  organization,  we will have an even greater ability to
deliver superior products and services to our customers. This translates into an
opportunity for stronger financial  performance and enhanced  shareholder value.
The appeal of this  combination by every strategic,  financial,  and operational
measure is a win for our customers, shareholders, and employees," stated Dana M.
Cluckey, president and CEO of Republic.

KEY HIGHLIGHTS OF THE TRANSACTION:
o    Based on  Citizens'  average  closing  price for the ten trading day period
     ended June 26, 2006, the transaction is valued at $13.86 per Republic share
     and  represents  total  consideration  of  $1.048  billion.  The  aggregate
     consideration  is  fixed at  approximately  $155  million  in cash and 33.2
     million Citizens shares (approximately 15% cash and 85% stock).
o    Republic  shareholders  will have the right to elect to receive either cash
     or Citizens common stock,  subject to pro-ration if either cash or stock is
     oversubscribed.  At closing,  each Republic  shareholder  will receive,  in
     exchange  for each  share of  Republic  common  stock  they  hold,  cash or
     Citizens common stock, in either case having a value equal to $2.08 in cash
     plus 0.4378  shares of Citizens  common stock based on the average  closing


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     price for the ten trading day period  immediately  preceding the completion
     of the merger.  Common stock received by Republic  shareholders is expected
     to qualify as a tax-free exchange.
o    The  transaction  is  projected  to close in the  fourth  quarter  of 2006,
     subject to regulatory and shareholder approvals.
o    Assuming  no  revenue   synergies,   the  transaction  is  expected  to  be
     immediately  GAAP  and  cash  accretive  to  earnings  per  share  for  all
     shareholders in 2007.
o    The  new  entity  will  be  named  Citizens  Republic  Bancorp   ("Citizens
     Republic") and will retain the familiar Citizens' colors and weatherball as
     part of its logo.
o    Key facts about Citizens Republic Bancorp:
          o    $2.0 billion in combined market capitalization
          o    275 branches and loan production offices in Michigan,  Wisconsin,
               Ohio, Iowa, and Indiana
          o    $13.9 billion in assets
          o    $8.6 billion in deposits
          o    $2.6 billion in trust assets under administration

MANAGEMENT STRUCTURE
The executive management of Citizens Republic Bancorp will be comprised of Jerry
D. Campbell as chairman, William R. Hartman as CEO, Dana M. Cluckey as president
and chief operating officer, Charles D. Christy as chief financial officer, John
D. Schwab as chief credit officer, and Thomas F. Menacher as merger integration
officer. The Board of Directors for Citizens Republic will be comprised of nine
current Citizens directors and seven current Republic directors. In addition to
being familiar with the communities served, the existing corporate cultures and
strategies for both companies are very compatible and the new leadership team is
committed to improving upon the strong sales and service-oriented philosophy of
both Citizens and Republic.

CITIZENS REPUBLIC BANCORP
Upon completion of the transaction,  Citizens  Republic Bancorp will represent a
strong   regional   brand  and  will  be  better   positioned  to  compete  with
super-regional  as well as community banks. The combined entity will be the 45th
largest  bank holding  company  headquartered  in the United  States with market
capitalization  of $2.0  billion,  assets  of $13.9  billion,  deposits  of $8.6
billion,  and  trust  assets  under  administration  of $2.6  billion.  Citizens
Republic will provide a full complement of commercial,  cash management,  wealth
management, and specialty lending products and services to Republic customers as
well as enhanced SBA,  commercial real estate and mortgage  banking products and
services for Citizens'  customers through 275 branch and loan production offices
with modest location  overlap and 279 ATMs in Michigan,  Wisconsin,  Ohio, Iowa,
and Indiana. This partnership will significantly increase the Southeast Michigan
presence to 39 locations,  giving  Citizens  Republic almost 5% of total deposit
market  share in Michigan,  and placing over 35% of its deposits in  high-growth
markets.  The merger will improve net  charge-offs  to total  average loans as a
result of a more diversified  loan portfolio,  diversify the revenue mix through
complementary  lines of business and reduce the efficiency  ratio as a result of
the enhanced scale of operations. Shareholders of the new entity are expected to
receive  dividends of $1.16 per share  annually.  This  represents a 4.3% yield,
based on  Citizens'  average  closing  price for ten trading days ended June 26,
2006 of $26.92.  This is consistent with Citizens' current policy and represents
an increase of 36% for Republic  shareholders  who receive  Citizens stock.  The
complementary   strengths  of  the  two   companies  are  expected  to  generate
significant  revenue  opportunities.  These enhancements are not included in the
financial  assumptions  for the  transaction but are expected to further improve
operating results and other key financial ratios.

RESTRUCTURING AND INTEGRATION
The transaction will improve financial returns by utilizing  existing  operating
capacity to improve efficiency. Annual cost savings of $28 million, or 9% of the
combined  expense base,  are  expected,  of which 70% are projected for 2007 and
100% for 2008 and  thereafter.  Citizens  Republic  anticipates  $87  million in
pre-tax restructuring costs, comprised of personnel, facilities/branch,  systems
and  other  expenses.  While  the  entire  management  team  at both  banks  has
successful acquisition integration experience,  Thomas F. Menacher will lead the
merger  integration  to ensure a successful  transition  for  customers.  Branch
divestitures,  if required after regulatory  review,  and system conversions are
expected to occur in the first quarter of 2007.

As part of the  transaction,  management plans to improve the interest rate risk
and credit risk  positions  at Citizens  Republic  by selling  approximately  $1
billion in mortgage  loans and  securities,  liquidating $1 billion in wholesale
funding,  and  recording  $20  million  of  credit-related  adjustments.   These
estimated  improvements  are based on the current  economic  and  interest  rate
environment   and  may  change  prior  to  completion  of  the  merger  and  the
restructuring. Additional actions are planned to improve the revenue and deposit
mix of the new entity by adding enhanced loan and deposit  product  capabilities
and leveraging the expanded branch network to increase lower-cost core deposits.


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Advisors to Citizens included UBS Investment Bank and Wachtell,  Lipton, Rosen &
Katz. Advisors to Republic were Goldman, Sachs & Co. and Cadwalader,  Wickersham
& Taft LLP.

INVESTOR CONFERENCE CALL
Jerry  D.  Campbell,   chairman  of  Republic,  William  R.  Hartman,  chairman,
president, and CEO of Citizens, Dana M. Cluckey,  president and CEO of Republic,
Charles D. Christy, CFO of Citizens, Thomas F. Menacher, EVP, treasurer, and CFO
of Republic,  John D. Schwab,  chief credit  officer of Citizens,  and Martin E.
Grunst,  treasurer of Citizens,  will review an investor presentation filed with
the SEC and posted to our  website  today at 10:30AM  EDT ON  TUESDAY,  JUNE 27,
2006.

To  participate  in  the   conference   call,   please  call  the  number  below
approximately  10 minutes  prior to the  scheduled  conference  time.  US/Canada
Dial-in Number:  (877) 407-8031  International  Dial-In  Number:  (201) 689-8031
Conference Name:  "Citizens  Banking  Corporation  Conference Call." RSVP is not
required.

MEDIA CONFERENCE CALL
The  executive  management  team will  conduct  a  conference  call  with  media
representatives to review an investor presentation filed with the SEC and posted
to our website today and to answer questions at 1:00PM EDT ON TUESDAY,  JUNE 27,
2006.

To  participate  in  the   conference   call,   please  call  the  number  below
approximately  10 minutes  prior to the  scheduled  conference  time.  US/Canada
Dial-in Number:  (888) 664-9958 Participant  Passcode:  7410344 Conference Name:
"Media Conference." RSVP is not required.


CORPORATE PROFILES
Citizens  Banking  Corporation  is  a  diversified  financial  services  company
providing a full range of  commercial,  consumer,  mortgage  banking,  trust and
financial  planning  services to a broad  client  base.  Citizens  operates  183
branch,  private banking, and financial center locations and 188 ATMs throughout
Michigan, Wisconsin, and Iowa.

Republic  Bancorp  Inc.,  has  consistently  been the number one Small  Business
Administration bank lender based in Michigan and one of the Midwest's top retail
mortgage  lenders.  Republic  was  named the 17th  Best  Company  to Work For by
FORTUNE  magazine  (marking the sixth year on FORTUNE's  "100 Best  Companies to
Work  For"  list)  and  named to  WORKING  MOTHER  magazine's  list of "100 Best
Companies for Working Mothers" for the fifth year in a row. Republic operates 92
retail,  commercial,  and  mortgage  banking  offices  and  91  ATMs  throughout
Michigan, Ohio and Indiana.


SAFE HARBOR STATEMENT
Discussions  in  this  release  that  are  not  statements  of  historical  fact
(including  statements  that  include  terms  such as "will,"  "may,"  "should,"
"believe,"  "expect,"  "anticipate,"   "estimate,"  "intend,"  and  "plan")  are
forward-looking   statements   that  involve   risks  and   uncertainties.   Any
forward-looking  statement is not a guarantee of future  performance  and actual
results  could differ  materially  from those  contained in the  forward-looking
information.  Such  forward-looking  statements include, but are not limited to,
statements about the benefits of the business combination  transaction involving
Citizens and Republic, including future financial and operating results, the new
company's  plans,  objectives,  expectations and intentions and other statements
that are not historical facts.

The following factors,  among others,  could cause actual results to differ from
those  set  forth in the  forward-looking  statements:  the  ability  to  obtain
regulatory approvals of the transaction on the proposed terms and schedule;  the
failure of Citizens or Republic  shareholders  to approve the  transaction;  the
risk that the businesses will not be integrated successfully;  deposit attrition
and  disruption  from the  transaction  making  it more  difficult  to  maintain
relationships  with  customers,  employees or suppliers;  the risk that the cost
savings and any other  synergies from the  transaction may not be fully realized
or may take  longer to  realize  than  expected;  competition  and its effect on
pricing, spending,  third-party relationships and revenues;  movements in market
interest  rates and secondary  market  volatility;  divestitures  assumed and/or
required;  potential  conditions  that may  affect  the  tax-free  status of the
Republic stock exchange for Citizens' common shares; and unfavorable  changes in
economic and  business  conditions  or the  regulatory  environment.  Additional
factors that may affect future results are contained in Citizens' and Republic's
filings   with  the  SEC,   which   are   available   at  the   SEC's  web  site
http://www.sec.gov.  Citizens and Republic disclaim any obligation to update and
revise  statements  contained in these  materials  based on new  information  or
otherwise.


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ADDITIONAL INFORMATION
In connection with the proposed merger,  Citizens and Republic will file a joint
proxy  statement/prospectus with the Securities and Exchange Commission ("SEC").
INVESTORS  AND SECURITY  HOLDERS ARE ADVISED TO READ THE JOINT PROXY  STATEMENT/
PROSPECTUS  WHEN  IT  BECOMES   AVAILABLE  BECAUSE  IT  WILL  CONTAIN  IMPORTANT
INFORMATION.  Investors and security holders may obtain a free copy of the joint
proxy  statement/prospectus  (when  available)  and  other  documents  filed  by
Citizens and Republic with the SEC at the SEC's  website at  http://www.sec.gov.
Free copies of the joint proxy  statement/prospectus  (when  available) and each
company's other filings with the SEC may also be obtained by accessing Citizens'
website at http://www.citizensonline.com under the Investor Relations section or
by  accessing  Republic's  website at  http://www.republicbancorp.com  under the
Investor Relations section.

Citizens and Republic and their  respective  directors,  executive  officers and
other  members  of  their  management  may  be  soliciting  proxies  from  their
respective  shareholders in favor of the merger.  Information concerning persons
who may be considered participants in the solicitation of Citizens' shareholders
under the rules of the SEC is set forth in the Proxy Statement filed by Citizens
with the SEC on March 22, 2006, and  information  concerning  persons who may be
considered participants in the solicitation of Republic's shareholders under the
rules of the SEC is set forth in the Proxy  Statement filed by Republic with the
SEC on March 14, 2006.  Additional  information regarding the interests of those
participants and other persons who may be deemed participants in the transaction
may be obtained by reading the joint proxy  statement/prospectus  regarding  the
proposed merger when it becomes  available.  You may obtain free copies of these
documents as described above.

This communication  shall not constitute an offer to sell or the solicitation of
an offer to buy  securities,  nor shall there be any sale of  securities  in any
jurisdiction  in which such  solicitation or sale would be unlawful prior to the
registration or qualification under the securities laws of such jurisdiction.
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           Visit our websites at HTTP://WWW.CITIZENSONLINE.COM and
             HTTP://WWW.REPUBLICBANCORP.COM for more information.


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