Part of Mission Street was closed for more than an hour Saturday morning and a man was arrested as police responded to reports of a person with a grenade.
Construction on the new Presidio Parkway was stopped twice this week after work crews discovered old explosives on the former military base.
The Santa Clara County sheriff’s bomb squad disposed of three World War II-era hand grenades found in a home near San Jose Thursday afternoon, a sheriff’s spokesman said.
Members of the San Francisco police bomb squad determined suspicious objects found in two different city neighborhoods on Friday were harmless.
A grenade found in a San Jose garage Friday afternoon was safely detonated and removed, according to police.
Police Chief Greg Suhr said extra officers will be on hand and the bomb squad will deployed along the racecourse.
Residents in San Francisco’s Noe Valley neighborhood were being evacuated Friday afternoon after police detained a man and then called the bomb squad to the area, a police spokesman said.
Police ordered a San Jose office building evacuated Wednesday morning as a bomb squad investigated a suspicious package.
A building on the San Francisco State University campus has been evacuated Monday morning because of a bomb scare, according to the university’s Twitter account.
The San Jose police bomb squad declared a suspicious device that resembled a pipe bomb was safe Friday evening after it was found at a business in the 500 block of Charles Street on Friday afternoon.