DALLAS -- A 12-year-old boy is recovering after he was accidentally shot by a 15-year-old.

The shooting happened in south Dallas near Ledbetter and I-45.

According to investigators, the older boy apparently thought the gun's safety was on when he pointed the weapon at the other boy and pulled the trigger. The 12-year-old was shot in the mouth but is expected to survive.

The 15-year-old was arrested.