The police report from March was straightforward enough. A man tried to commit suicide at his New Jersey home. When he called for help, two officers from the Paterson Police Department responded to the residence and then went to the hospital where he was taken for treatment.

But this week, federal prosecutors announced criminal charges against one of the officers, saying video taken inside the hospital revealed events that the official report from the night of March 5 had left out.

One of the officers, a criminal complaint says, punched the man in the face while he was in a wheelchair in the emergency room waiting area. As the man fell over, the other officer, Roger Then, 29, grabbed the man by his neck and forced him to the ground, the complaint says, citing footage from a surveillance camera.

A second video was taken on a cellphone in a hospital room. It showed Officer Then turning the camera on himself, smiling and pointing it at the man, who was in bed, and the other officer, identified as Officer 1 in the complaint.