(Gresham, OR) -- Gresham Police have identified the man who shot and killed a security guard at Legacy Good Samaritan Hospital in Portland on Saturday. The suspect is identified as 33-year-old Portland resident PoniaX Kane Calles, formerly known as Reginald Kane Jackson. Calles was shot and killed by police in Gresham shortly after the shooting. Calles had previous arrests for Interfering with a Police Officer, Reckless Driving and Assault. Police say Saturday's shooting killed hospital security guard Bobby Smallwood, who was reportedly trying to protect patients and staff members when he was shot. The shooting happened near the hospital's birth center.