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Associated Press
Police officers leave an office building after a shooting at the building in Phoenix on Wednesday, Jan. 30, 2013. A gunman opened fire at the Phoenix office building, wounding three people, one of them critically, authorities said. Police were searching for the shooter. (AP Photo/Patrick Sison)

PHOENIX — A gunman opened fire at a Phoenix office complex on Wednesday, killing one person, wounding two others and setting off a manhunt. Police warned the public that he was "armed and dangerous."

Authorities identified the suspect as 70-year-old Arthur Douglas Harmon. They identified a man who died hours after the late morning shooting as 48-year-old Steve Singer.