A bomb left inside a Starbucks bathroom was defused by the San Francisco police explosives ordnance unit this afternoon, according to Sgt. Neville Gittens.

The improvised explosive device was defused around 2 p.m., Gittens said.

Police responded to a call about a suspicious device in the coffee house located at Van Ness Avenue and Bush Street at 1:15 p.m.

Gittens said he could not comment on the size or type of device found or on its potential explosive capacity. A police investigation is ongoing.