The student accused of injuring four in a shooting at a Dallas high school was let into the building through an unsecured door and then walked down a hallway toward a group of students, opening fire on them and then appearing to take a point-blank shot at one, according to an arrest warrant released Wednesday.
The 17-year-old suspect was being held in Dallas County jail on Wednesday on a charge of aggravated assault mass shooting. He was taken into custody several hours after the shooting, which happened just after 1 p.m. on Tuesday at Wilmer-Hutchins High School.
