INDIANAPOLIS (AP) – Court documents show that a 13-year-old boy accused of shooting a classmate and a teacher at a suburban Indianapolis middle school used a .22-caliber handgun in the shooting.

RELATED: Two wounded in shooting at Noblesville middle school

Police had previously said the suspect had two handguns when he allegedly opened fire May 25 at Noblesville West Middle School.

But a delinquency petition filed Tuesday by prosecutors who said the suspect would not be tried as an adult in the attack shows that he allegedly used a .22-caliber handgun in the shooting and also had a .45-caliber handgun and a knife in his possession.

Thirteen-year-old Ella Whistler’s family said Monday that she was shot seven times and remains hospitalized. Science teacher Jason Seaman was shot as he tackled the shooter, but he was released from a hospital the next day.

RELATED: Noblesville middle school shooter will not be tried as an adult