Las Vegas police have released surveillance footage of a 74-year-old man with a walker being shoved off a public bus in hopes of locating witnesses.
Serge Fournier hit his head on the sidewalk in the March 21 incident, police said. The man died about a month later and the Clark County coroner ruled his death a homicide resulting from his injuries.
A woman has now been charged with his murder.
Authorities released the video in hopes of locating witnesses to the attack.
A police report says Fournier was moving up the aisle of the Regional Transportation Commission bus when he asked a woman who had been cursing at other people to be nicer to passengers.
Police say the woman then shoved him off the bus.