An earthquake with a magnitude of 4.3 woke up a number of people with a sharp jolt in the San Francisco Bay Area early Monday, according to the United States Geological Survey.
The earthquake was just east-southeast of Berkeley, the survey said. It happened shortly before 3 a.m. Pacific time.
People posted online that they felt their homes shake.
"Our calls are coming in from San Francisco and the East Bay and all over," Oakland's KTVU anchor Dave Clark said in a video from the newsroom. "Things were shaking in our newsroom. ... It caught everyone off guard."
It wasn't immediately known if there were any injuries or significant damage.