Det. Richard Encinas says school staffers found the student and tried to walk him to the administrative office. But he ran off. A school resource officer pursued him to a desert area near Red Mountain Park.
2 IOWA STUDENTS KILLED, 1 SCHOOL EMPLOYEE INJURED SCHOOL SHOOTING, 2 SUSPECTS IN CUSTODY
Red Mountain High School was under lockdown after a student brought a gun in his backpack.
Meanwhile, the school was locked down out of caution.
Encinas says multiple officers arrested the student without incident. The entire incident unfolded over 30 minutes.
Authorities found a gun near where he was arrested. The lockdown was lifted.
Encinas says investigators determined the student never threatened anyone or took the gun out.
The student's name was not released.