Plaxico Burress testified for nearly three hours on Wednesday in front of a grand jury.
He is being investigated on weapons charges against him and told reporters that he was sorry for his actions.
"I was truthful, I was honest, and I'm truly remorseful for what I've done and for what happened," Burress said outside a Manhattan courthouse.
Burress shot himself in the thigh at a Manhattan nightclub in November.
'Remorseful' Burress Testifies For Grand Jury