Thornton, Co., police have arrested Scott Ostrem, 47, in an apparently random Walmart shooting in which a man almost casually shot two men and a woman to death before turning around and walking out of the store Wednesday night, the Denver Post reports. Police spokesman Victor Avila said the gunman “walked in very nonchalantly with his hands in the pockets, raised a weapon and began shooting. Then he turns around and walks out of the store. From what we have right now it appears to be random. It’s a crazy world we live in.”
Aaron Stephens, 44, was in the self-checkout line at Walmart when he heard a single shot fired, followed by more bursts of gunfire. He said customers started screaming and running for the exits. The victims have not yet been named. According to court records, Ostrem declared bankruptcy in 2015, but he does not have a lengthy criminal record. In 2013, he was arrested for driving with impaired ability.