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,

School district officials say 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.

Three students were wounded by gunfire and a fourth also was injured when gunfire erupted at Wilmer-Hutchins High School on Tuesday afternoon, officials said.