FBI Raids Cleveland Offices of Firm Linked to Ukrainian Oligarch

The seal of the FBI hangs in the Flag Room at the bureau's headquarters in Washington on March 9, 2007. Chip Somodevilla/Getty Images

The FBI and the Internal Revenue Service (IRS) on Aug. 4 raided the offices of a company with ties to Ukrainian oligarch Igor Kolomoisky.

Agents searched the office of real estate firm Optima Management Group in a downtown Cleveland high-rise as part of an ongoing investigation, the FBI stated. No one was taken into custody.