PHILADELPHIA  About 12 police officers were videotaped on Monday beating three men stopped in response to a drug-related shooting, and six of the officers have been removed from patrols, Police Commissioner Charles H. Ramsey said Wednesday.

In the incident, captured by a Fox TV helicopter, officers surrounded a car carrying the three men. They were pulled from the car, and two were kicked and punched on the ground by officers on the driver’s side. The third man was beaten by other officers on the passenger side.

The incident, on Monday night, in the Hunting Park section followed the shooting death of Sgt. Stephen Liczbinski, 39, a 12-year member of the force, on Saturday in the nearby Port Richmond section.

Sergeant Liczbinski was pursuing three robbery suspects. The police arrested a man sought in the case late Wednesday night, the Associated Press reported. Another was arrested on Sunday, and a third was fatally shot by an officer shortly after the officer’s killing, The A.P. said.