School gunman had AR-15-style weapon, 600 rounds of ammo

ST. LOUIS — A 19-year-old who killed a teacher and a 15-year-old girl at a St. Louis high school was armed with an AR-15-style rifle and what appeared to be more than 600 rounds of ammunition, a... #louis #girl #rounds #highschool #stlouis #policeofficial #rifle #schoolgunman #teacher