As investigators seek to identify rioters who stormed the U.S. Capitol, police departments in Virginia and Washington state have placed officers on leave as authorities examine whether they took part in unlawful acts while off-duty.

Fire departments in Florida and New York City have also said they reported to federal authorities allegations that some of their members may have been present when the mob broke into the Capitol as Congress met to certify the results of the Nov. 3 presidential election.

The police department in the small town of Rocky Mount, Virginia, said on Sunday it had placed two officers on administrative leave after it learned they attended an “event” in Washington, D.C. on Wednesday while off-duty.

Read more: Reuters