Buy this PhotoA photo of Michael Eugene Pierce is seen on display at a candlelight vigil in his memory Friday evening in downtown Vancouver. Pierce was shot and killed Thursday afternoon by Vancouver police. Amanda Cowan/The Columbian Investigators looking into the Feb. 28 fatal officer-involved shooting of a 29-year-old homeless man determined the guns he brandished at Vancouver police were realistic-looking black and chrome replica pistols.Two officers shot and killed Michael Eugene Pierce west of downtown Vancouver after he reportedly pointed the two replica firearms at himself, passers-by and police.Officers responded around 4:45 p.m. to West 12th and Jefferson streets for a report of an armed person. Shortly after, officers yelled shots had been fired and a man was down, with a firearm by his feet, according to emergency radio traffic monitored at The Columbian.Officers Christopher Douville and Andrew Dunbar fired their weapons, and neither was injured, according to Vancouver police. They have been placed on critical incident leave, which is standard department protocol in an officer-involved shooting.At a candlelight vigil last week, friends said Pierce was known to carry brightly colored pellet guns that he treated as toys.