Published: Aug 15, 2010 8:21 PM EDT
Updated: Aug 15, 2010 5:21 PM EDT

BUFFALO, N.Y. (AP) - The man who'd been arrested in the four shooting deaths outside a restaurant in Buffalo, N.Y., early yesterday could still be re-arrested if authorities change their minds.
      
But prosecutors say they decided to drop the charges against Keith Johnson based on photos and witness statements.
      
A prosecutor says the evidence didn't support the charges against Johnson. He told a judge, "I'm not sure he did it."
      
Johnson is still being held on a parole violation.