FBI launching investigation into violent bar brawl involving police, Pagans

In one of the videos, an undercover officer is seen punching a biker in the head more than 19 times as he's held on the bar.

"It's appropriate that the FBI look into this," said Beth Pittinger, executive director of the Citizen Police Review Board. "You had an extraordinary use of force against one of the motorcycle club members, and I think everyone has seen the video where he was held and restrained."

Public Safety Director Wendell Hissrich released this statement to Channel 11:

"The public and our police officers deserve an impartial examination of the facts. We welcome the FBI's involvement and pledge to fully cooperate."

The four undercover officers said they were investigating drug activity in the bar, but attorneys for the bikers said the officers spent five hours driving at the bar and instigated the fight with the Pagans.

Police charged the Pagans with assault, but now the officers have come under scrutiny.

"There's a question about civil rights violations, as well as the excessive use of force, which would violate the individual's civil rights," Pittinger said. 

The Allegheny County District Attorney's Office told Channel 11 it is preparing for a preliminary hearing for the Pagans on Friday. An attorney for one of them said she plans to subpoena the police officers to appear in court then.