(AP) - A short sharp earthquake rattled the San Francisco Bay Area, but there are no reports of injuries.
The U.S. Geological Survey said the 4.0 magnitude quake Monday morning was centered just north of Piedmont, near Berkeley, and felt in downtown San Francisco, along the Peninsula and in the East Bay.
The shallow quake at 6:49 a.m. was a sharp jolt, followed by a couple of gentle rolls. It was not immediately known if the quake caused damage.
Bay Area Rapid Transit is holding trains to check the tracks on the public transit system. Commuters should expect delays.