A Sunnyvale resident on Saturday dropped off ammunition and grenades in the Department of Public Safety's lobby, prompting the evacuation of the building.
The department is headquartered at 700 All America Way, which has been closed indefinitely, officials said in a Nixle alert.
A bomb squad is heading to the area. People are urged to stay away.
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Hand grenades cause evacuation of Sunnyvale police, fire headquarters
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