Aaron Hernandez has pleaded not guilty to first-degree murder following his indictment in the killing of Odin Lloyd.

Hernandez firmly answered "not guilty" to six charges, including murder and weapons and ammunition possession charges.

Hernandez's attorneys agreed that he would be held without bail but reserved the right to request bail at a later date.

Bristol District Attorney Samuel Sutter said, in fact, a "tremendous amount" of evidence has already been presented. He cited 500 pages of documents released to the press and public, including search and arrest warrants, affidavits and photographs taken from a surveillance system at Hernandez's home.

"I think that evidence speaks for itself," he said.