ANTIOCH (KRON) — Authorities say a 13-year-old Antioch girl has been arrested after she accidentally shot herself in the hand with a gun.

The girl said she found the weapon at school in a restroom last week. The teen told officers she placed the gun in her backpack where she kept it all day.

A report said when she got home, she was going to show the firearm to her grandmother but then accidentally shot herself in the hand. The girl is recovering.

Police took the gun and booked her into a juvenile hall on suspicion of weapons-related charges.

No word yet on the owner of the gun.