Suspect in Colorado Walmart killings called hostile loner

THORNTON, Colo. (AP) — A man arrested on suspicion of fatally shooting three people inside a suburban Denver Walmart was described Thursday by neighbors as a hostile loner who cursed at them and often carried a shotgun in and out of his third-floor apartment.
Police arrested Scott Ostrem, 37, a day after the shooting that killed three people following a brief morning rush-hour chase in the northern Denver suburb of Thornton several blocks from his apartment building and about 5 miles (8 ki