A video posted on Twitter Thursday night showed two men attempting to throw out a passenger from a San Francisco Muni train for allegedly playing his music too loud.
Independent journalist Anna Sterling who posted the video, which has since gained over 3,000 likes and shares, wrote "They're attempting to throw him onto the street. You can see it clearly here. He's just a kid. This is not okay."
The video shows two adult men violently pushing, pulling and kicking 21-year-old Dexter Lotz toward the doors and putting him in a chokehold. Witnesses are heard demanding the men stop what they’re doing but it is unclear how the situation ended.
"I had a feeling he had a problem with my music," Lotz said. "He lept up, grabbed me, put me in a choke hold."
However, a man who lives near the Muni said he heard one of the men telling police Lotz was acting out on the train.
"He was telling the officers that it was actually him [Lotz] who had started it all instigated it all and was acting very unstable said he was ripping the straps off the train," said Medhi Afzali.
Sterling said she didn't take the video herself and that it was sent to her by a witness who said she got off the train to help the young man.
SFMTA tweeted in reaction to the video: "This video is certainly disturbing and passenger safety is our top priority. We are working with @SFPD to investigate the incident."
Muni officials said they are providing surveillance video from the train to police as they investigate.
Police spokesman Robert Rueca said officers were called to the Outer Sunset neighborhood Thursday night over an assault on a train. Lotz gave officers a statement and didn't want to press charges.
Officers could not locate a third man seen shoving Lotz, Rueca said.
The Associated Press contributed to this story.