Earlier in the day, police released footage of the shooting, that left one dead and two others wounded. Collins also wounded himself.
Police say Collins is believed to be the only suspect, but they are not ruling out other individuals.
The video footage appears to show Collins come out of a VIP room at Irving Plaza, located near Union Square in lower Manhattan, and fire a shot.
Collins appears to pause and look around the crowd before firing the shot and exiting the screen.
T.I., who was not on stage during the shooting, took to Twitter Thursday, writing, "My heart is heavy today. Our music is intended to save lives, like it has mine and many others. My heartfelt condolences to the family that suffered the loss & my prayers are with all those injured. Respectfully, Tip."
During a radio interview Thursday, NYPD Commissioner Bill Bratton blamed the shooting on “so-called rap artists who are basically thugs.”
“The crazy world of the so-called rap artists who are basically thugs that basically celebrate the violence they live all their lives and, unfortunately, that violence often manifests itself during the performances," Bratton said during an interview with WCBS 880. "That’s exactly what happened last evening.”
Bratton said police investigating the shooting at the Manhattan venue are confident about what happened that night.
“We feel we’ll wrap it up very quickly,” he said.
Editor’s note: In an earlier version of this story, the location of the shooting was misidentified as happening at another venue. The shooting occurred at Irving Plaza.