Injuries, damage in Califiornia quake

A magnitude 6 earthquake has shaken northern California, causing injuries and damage to buildings.

The United States Geological Survey said it struck at 3.20am local time and was centred 6km north-west of the town of American Canyon, at a depth of 10.7km.

In the Napa area, at least 87 people have been taken to hospital, three of them with serious injuries; two were in intensive care and the third was a child who was injured when a chimney collapsed on their home.

Officials said gas mains were broken and water mains leaking, with more than 10,000 Napa households without power and state governor Jerry Brown declaring a state of emergency, the BBC reports.