Brookfield Office Properties Commences $25.00/Share Tender Offer to Acquire Preferred Shares of MPG Office Trust

Brookfield Office Properties Inc.

is commencing today, through a direct wholly-owned subsidiary, a cash tender offer to purchase all outstanding shares of preferred stock of MPG Office Trust, Inc.

. BPO previously announced its intention to acquire MPG through a newly formed fund controlled by BPO on Thursday, April 25, 2013 pursuant to a merger agreement executed on April 24, 2013. Upon the closing of the tender offer, preferred stockholders of MPG will receive $25.00 in cash for each share of MPG preferred stock validly tendered and not validly withdrawn in the offer, without interest and less any required withholding taxes. Shares of MPG preferred stock that are tendered and accepted for payment in the tender offer will not receive any accrued and unpaid dividends on those shares.BPO will file today with the U.S. Securities and Exchange Commission (SEC) a tender offer statement on Schedule TO which sets forth in detail the terms of the tender offer. MPG is required to file with the SEC a solicitation/recommendation statement on Schedule 14D-9 within 10 business days from today communicating its views regarding the tender offer to the