Selling, general, and administrative expenses in our Brooks Semiconductor Solutions Group segment were $21.2 million and $65.0 million, respectively, for the three and nine months ended June 30, 2020, as compared to $18.2 million and $57.3 million, respectively, for the corresponding periods of the prior fiscal year. The increase of $3.0 million and $7.6 million for the three and nine months ended June 30, 2020 is primarily related to higher corporate allocated costs, driven by higher audit, legal, and IT costs.
Selling, general, and administrative expenses in our Brooks Life Sciences segment were $30.6 million and $92.1 million, respectively, for the three and nine months ended June 30, 2020, compared to $27.5 million and $74.9 million, respectively, for the corresponding periods of the prior fiscal year. The increase for the three months ended June 30, 2020 was driven by increased bad debt expense, payroll primarily related to our investment in GENEWIZ, and $0.3 million of expense structure added with the acquisition of RURO. These increases were partially offset by lower travel expenses and expense structure reductions realized from the restructuring actions taken in Sample Management during 2019 and 2020. The increase for the nine months ended June 30, 2020, was primarily related to increases from GENEWIZ which consisted of $5.1 million due to the additional time under ownership during the nine months ended June 30, 2020 compared to the corresponding period of the prior fiscal year, and $1.6 million driven by the investment in selling, general, and administrative structure to support its growth. The increase was also driven by higher corporate allocated costs due to higher audit, legal, and IT costs, and $0.4 million of expense from RURO, acquired in February of 2020. These increases were partially offset by expense structure reductions realized from the restructuring actions taken in Sample Management during 2019 and 2020.
Restructuring Charges
We recorded restructuring charges of $0 and $1.1 million, respectively, during the three and nine months ended June 30, 2020, as compared to $0.3 million and $0.7 million, respectively, during the corresponding periods in the prior year. Cost savings realized during the three months ended June 30, 2020 included $1.1 million related to actions to reduce costs within the Brooks Life Sciences segment. Restructuring charges for the nine months ended June 30, 2020 consisted of $0.6 million related to corporate restructuring actions and $0.6 million in the Brooks Life Sciences segment related to the action initiated in the fourth quarter of fiscal year 2019 to eliminate costs within the segment’s Sample Management business. Cost savings realized during the nine months ended June 30, 2020 related to these actions were $2.6 million in Brooks Life Sciences segment.
Non-Operating Income (Expenses)
Interest income - During the three and nine months ended June 30, 2020, we recorded interest income of less than $0.1 million and $0.9 million, respectively, as compared to $0.1 million and $0.8 million, respectively, during the corresponding periods of the prior fiscal year.
Interest expense - During the three and nine months ended June 30, 2020, we recorded interest expense of $0.8 million and $2.2 million, respectively, as compared to $8.0 million and $21.3 million, respectively, during corresponding periods of the prior fiscal year. The decrease in interest expense in the current periods compared to the three and nine months ended June 30, 2019 is due to carrying less debt in the current period. We extinguished $495.3 million of debt during the fourth quarter of fiscal year 2019.
Loss on extinguishment of debt - During the nine months ended June 30, 2019, we recorded a loss on extinguishment of debt of $9.1 million in connection with the syndication of the $350.0 million term loan secured during the first quarter of fiscal 2019. The syndication to a new group of lenders during the second quarter of fiscal 2019 met the criteria of a debt extinguishment and therefore the amortization of the deferred financing costs associated with the origination of the loan was accelerated and recorded as a loss on extinguishment of debt on our statement of operations.
Other income (expenses), net - During the three months ended June 30, 2020, we recorded other income, net of $0.5 million compared to other expense, net of $0.3 million in the corresponding period of the prior year. The current period included a reduction in foreign currency exchange losses as compared to the prior year period. During the nine months ended June 30, 2020 and 2019, we recorded other expense, net of $1.3 million and $1.1 million, respectively. The