Relatives of the gunman who killed a student and teacher Monday during a St. Louis school shooting had long been concerned about his mental health, and worked with police to take a gun away from him — the same gun used in the attack — the St. Louis Metropolitan Police Department confirmed Wednesday. Just nine days before the shooting, the suspect's mother called police to the home after finding the gun, police said. Details: https://www.cbsnews.com/sacramento/news/gun-was-earlier-confiscated-from-st-louis-school-shooter/?intcid=CNM-00-10abd1h #cbsnewsmiami #news #saintlouis #stlouis #missouri #schoolshooting #gunviolence