A federal investigation has been opened after a police sergeant was filmed stomping on the head of an Indianapolis man while he was lying handcuffed on the ground.

The U.S. Attorneys Office in the Southern District of Indiana announced Wednesday that it is looking into the Sept. 24 incident, which led to criminal charges being filed this week against Indianapolis Police Sgt. Eric Huxley.

Our office and the FBI have opened an investigation, and if the investigation reveals prosecutable violations of any federal criminal statutes, the Department will take appropriate action, Acting U.S. Attorney John Childress said in a statement.