The teenager shooter who attacked a school in Maryland last week—killing one student and wounding another—killed himself and was not shot by a school resource officer as was previously reported, authorities said. The shooting at Great Mills High School last Tuesday saw Austin Wyatt Rollins fire one shot that hit his ex-girlfriend, Jaelynn Willey, in the head; another student, Desmond Barnes, was struck in the leg by the same bullet. Willey later died of her injuries after being taken off life support and Rollins died at the scene. It had been unclear whether Rollins killed himself or was shot down by an armed school officer, but investigations have concluded that he shot himself in the head while a simultaneous shot from an officer hit and ricocheted off Rollins’ handgun. The findings come amid a debate on whether to arm teachers and increase the number of armed officers placed in schools.