A rapper has been arrested after a fatal shooting at a T.I. concert.
Roland Collins, who goes by the stage name Troy Ave, is being held on attempted murder and weapons charges, a police spokesman said.
Four people were shot, including one fatally, when a fight started in a performers' lounge at the New York venue before spilling into a second-floor VIP area.
Police say Collins, who was shot in the leg, was seen on surveillance footage firing a gun.
An eight-second video clip released by police shows the gunman, who officers identified as Collins, bursting through the door of a VIP room in apparent pursuit of another man, who flees off-screen.
As concertgoers huddle under a counter and clutch each other, the gunman, who appears to be limping, stops and scans the room for a moment. Then, he spots something, raises his gun and fires.
Relatives of the man killed in the shooting, Ronald McPhatter, said he was working as a security guard for Collins when he was fatally wounded.
Nearly 1,000 people were in the concert hall at the time of the incident.
One of those injured, Christopher Vinson, was shot in the chest on the venue's ground level after a bullet travelled through the floor, police said. Maggie Heckstall was shot in the leg, authorities said.
Police Commissioner William Bratton called rap artists "basically thugs" in a radio interview, describing "the crazy world of these so-called rap artists who are basically thugs that basically celebrate violence they did all their lives".
His comments prompted an angry response from city councilman Jumaan Williams, a Brooklyn Democrat, who said: "When white people are doing this violence, I don't hear the same language being used."
In a post on Instagram, T.I. sent his condolences to the victims, adding that "our music is intended to save lives, like it has mine and many others".
The shooting marks the third time in a decade that shootings have occurred at concerts where the rapper was to perform.
A member of T.I's entourage was killed and three others were injured during a gun battle following a party after a gig where T.I. performed near Cincinnati in 2006.
Last March, two people were shot and injured in a Charlotte, North Carolina, nightclub where he was to perform. In 2010, the Atlanta rapper was sentenced to 11 months in prison on federal gun charges.