A suspect in a shooting at a Dallas high school that wounded four students and drew a heavy police response to the campus has been taken into custody, school district officials announced Tuesday night.

A teen suspect was in custody and police were seeking a motive after four students were shot in a Dallas high school where a teacher's quick thinking was being credited for saving lives. The rampage took place April 15 at Wilmer-Hutchins High School,

Hours after the shooting, officials said the suspect, who has yet to be apprehended, had evaded security protocols at Wilmer-Hutchins High School.