Corporate Office Properties Trust of Columbia announced Tuesday that it has acquired The Rappahannock Building, a 152,000-square-foot office building in Tysons Corner, Va., for $40 million.

The six-story building at 1550 Westbranch Drive is 100 percent leased to the MITRE Corp. This is COPT's second acquisition in Tysons Corner, after the Pinnacle Towers, which it bought in 2005.

COPT now controls about 600,000 square feet of space in Tysons Corner. COPT officials say the latest acquisition is consistent with the company's strategy of developing and acquiring properties leased primarily to tenants in the U. S. government, defense and data sectors.

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