1 dead in US office shooting, suspect on loose

PHOENIX (AP) - Police searched on Wednesday for a 70-year-old man suspected in an office shooting that left one dead and two wounded in Arizona's largest city, saying he is "armed and dangerous."

As police searched for the shooter, SWAT teams and two armoured vehicles surrounded his house about 11km from the shooting scene in Phoenix. Police served a search warrant to enter the home.

For a time, officers, believing the shooter was inside, used a megaphone to ask him to surrender.

The gunfire at the office complex prompted terrified workers to lock the doors to their offices and hide far from the windows. SWAT officers searched the building.