Earthquake in California rattles San Francisco and Napa
24 August 2014 Last updated at 23:46 BST
An earthquake with a magnitude of 6.0 has shaken northern California, causing injuries and damage to buildings.
At least 87 people have been taken to hospital in the Napa area, with three of them seriously injured.
California Governor Jerry Brown has declared a state of emergency in order to deal with the effects of the quake.
Alastair Leithead reports.