In 1998, Coleman was charged with assault while he was working as a security guard. Tracy Fields, a Los Angeles bus driver and fan of Coleman's work on Diff'rent Strokes, approached him in a California mall and requested his autograph, while Coleman was shopping for a bulletproof vest. Coleman refused to give her an autograph, an argument ensued, and Fields reportedly mocked Coleman's lackluster career as an actor. Coleman then punched Fields in the face several times in front of witnesses. He was arrested and later testified in court that she threatened him, and he defended himself. "She wouldn't leave me alone. I was getting scared, and she was getting ugly," he said. Coleman pleaded no contest to one count of assault, received a suspended jail sentence, and was ordered to pay Fields' $1,665 hospital bill, as well as take anger management classes.