By COREY WILLIAMS and ED WHITE
OXFORD TOWNSHIP, Mich. (AP) — A 15-year-old boy has been charged with murder and terrorism for a shooting that killed four fellow students and injured others at a Michigan high school. Authorities on Wednesday revealed that his parents were summoned just a few hours before the bloodshed. No motive was offered by Oakland County authorities, a day after violence at Oxford High School. But sheriff’s Lt. Tim Willis told a judge that Ethan Crumbley recorded a video the night before the violence in which he discussed killing students. Crumbley is charged as an adult with murder, attempted murder, terrorism causing death and gun crimes. A judge ordered him held without bond and transferred to jail from a juvenile facility.