UPDATE @ 5:26PM: Eight people are now reported injured in the Oxford High School shooting. ORIGINAL: A 15-year-old student was taken into custody Tuesday after authorities say he fatally shot three students and injured six other people, including a teacher, at a high school north of Detroit. The student, a sophomore, was taken into custody within minutes of the shooting, Oakland County Undersheriff Mike McCabe. He fired anywhere from 15 to 20 shots during the attack, McCabe added. "He didn't give us any resistance when he was taken into custody," McCabe said. "The whole thing lasted 5 minutes." A motive wasn't clear in the attack. For more on this developing story, visit the link in our bio.