A teenager has been charged with second-degree murder in the death of another teen who was stabbed during a fight in a Long Island, N.Y., parking lot earlier this week, while dozens of onlookers watched and filmed but did nothing to intervene.

Tyler Flach, an 18-year-old college freshman from Lido Beach, N.Y., pleaded not guilty at his Thursday arraignment in the death of 16-year-old Khaseen Morris, Newsday reports. He was ordered to be held without bail and faces 25 years to life in prison if convicted.

The suspect surrendered himself to police late Wednesday with the help of his attorney, Ed Sapone, who told Newsday his client “strongly maintains his innocence.”

“He took the responsible step of self-surrendering to eventually clear his name,” Sapone said ahead of the arraignment. “At the appropriate time, we will release vital information about what happened that’s not captured on video and that completely changes this case. Until then, we ask the community to reserve judgment and pray for those who are suffering.”

Flach has had at least two prior arrests in 2019, one on Sept. 8 for criminal possession of a controlled substance and one on May 23 for assault in the third-degree related to a road rage incident, Nassau County police commissioner Patrick Ryder said during a press conference.

Morris, a student at Oceanside High School, was allegedly lured to a strip mall parking lot near his school after class on Monday by another group of teens who threatened his safety if he didn’t show up.