Murder charges against a man accused of shooting four people dead at a restaurant in New York state have been dropped.
The diners at the City Grill, Buffalo, were shot early on Saturday morning.
Keith Johnson, 25, of Buffalo, was arrested later that day, but on Sunday prosecutors said evidence and statements did not back up the charges.
Johnson had recently been released from prison and is now being held for violating the terms of his parole.
Authorities could re-arrest him if prosecutors change their minds, it was reported.
Two men and two women were killed, and four more people were injured, when a gunman opened fire after an argument outside the restaurant.
One of those killed was a man who was celebrating his first wedding anniversary. His wife escaped unharmed. The couple had apparently arrived from Texas to celebrate.
Witnesses said they believed some men had become angry after being refused entry to the party.