Robert Sims, 35, who allegedly grabbed the SUV’s door about five minutes into the video, turned himself in to police in Brooklyn earlier Friday, NYPD officials said.
He faces charges of gang assault, assault and criminal possession of a weapon, police said this morning.
Sims was arrested in 1998 for possession of a loaded firearm and a samurai sword, and he served eight months in jail, police said.
Reginald Chance, 38, Brooklyn, N.Y., also surrendered to police late Friday. He allegedly was the man seen on video using his helmet to smash the driver’s side window of the Range Rover before the video cut off and the alleged assault took place.
Chance’s possible role in the alleged assault beyond the window smashing was not immediately clear. There was no immediate information on charges or an arraignment.
An undercover police officer was among the crowd of motorcyclists on the scene as Lien was beaten on Sunday, officials confirmed to ABC News Friday.
The undercover narcotics cop did not intervene in the beating out of fear that his cover would be blown, sources said.
The cop’s identity has not been released by the NYPD. According to officials, the officer notified his superiors days after the incident. He was a motorcyclist who was there on his own time, they said.
The information was part of the ongoing investigation by the NYPD and the Manhattan district attorney into the confrontation and beating that happened Sunday afternoon between a group of 20 to 30 motorcyclists and Lien. The incident was caught on video and uploaded to the Internet.
The officer’s involvement was also the subject of an Internal Affairs investigation, sources said.
A source briefed on the case told ABC News that in the days since the attack, “new evidence has been coming in and it will give prosecutors much better evidence for charging the attackers.”
The new evidence included additional video footage and stills compiled from a variety of cameras that were situated around the scenes of the chase and melee, the source said.
ABC News’ Mark Crudele, Colleen Curry and Alexis Shaw contributed to this report.
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