Police identified the suspect as 18-year-old student Timothy George Simpkins, who was taken into custody within hours of the shooting at Timberview High School in Arlington. WATCH FULL EPISODES OF WORLD NEWS TONIGHT: https://abc.com/shows/world-news-tonight WATCH WORLD NEWS TONIGHT ON HULU: https://bit.ly/3iQLwPp #WorldNewsTonight #Texas #HighSchoolShooting #Arlington #GeorgeSimpkins #Police