(Bellevue, WA)  --  Bellevue, Washington police are looking for a man who's wanted in a murder, and investigators say he could be in Portland.  Thirty-year-old Song Wang, who was reportedly spotted in Portland Saturday, is accused of committing the murder last Tuesday night at a Bellevue apartment complex, where a woman's body was found in a sixth-floor unit that had been set on fire.  Authorities say the woman died of traumatic injuries.  Wang, who's considered armed and dangerous, is described as standing five-feet-eight, weighing 160 pounds, with black hair and brown eyes.