VIDEO NOW: Investigator describes Michigan school shooter’s mom as cold after her son killed four students

PONTIAC, Mich. (AP) — Hours after a teenager killed four students at his Michigan high school, his mother said, “He’s going to have to suffer,” an investigator testified Wednesday. “I found that odd. She was referring to someone who was her son,” Detective Lt. Sam Marzban of the Oakland County Sheriff’s Office told jurors.