A 16-year-old boy accused of trying to steal Nike sneakers from an Ohio mall shopper who fatally shot another teen who was with him has pleaded not guilty to involuntary manslaughter and robbery charges.

A Montgomery County court official confirmed that the boy entered the not-guilty pleas Thursday in Dayton. He is being prosecuted as an adult. A message seeking comment was left for his attorney.

Police say the boys accosted shoppers who had bought limited-edition Air Jordan sneakers at the Dayton Mall days before Christmas. One boy showed a gun and was fatally shot by a shopper with a concealed-weapons permit.

Under Ohio law, a suspect can be held responsible for an accomplice's death during a robbery.