source: www.onenewsnow.com Associated Press THORNTON, Colo. (November 2, 2017) — A man accused of opening fire inside a suburban Denver Walmart, killing three people, abruptly walked away from his roofing company job hours before the attack, his former boss said Thursday. Scott Ostrem’s employer and neighbors painted a somewhat dueling portrait of the suspect. Ostrem worked … Continue reading Suspect walked off job hours before Colo. Walmart attack