Los Angeles-based real estate investment firm buys Two Liberty offices

Los Angeles-based Coretrust Capital Partners LLC has become effective majority owner of the office portion of Center City's Two Liberty Place tower, the company said Friday.

Two Liberty, designed by architect Helmut Jahn, opened in 1990 as the corporate headquarters of Cigna, which occupied the entire 1.2 million-square-foot structure.

After Cigna reduced its occupancy in 2005, the building's top 20 floors were converted to luxury condominiums, and other tenants joined the insurer in its offices.