Strong quake hits northern California

An earthquake of 6.0 magnitude rocked northern California in the US Sunday.

The epicentre of the quake, which occurred about 3.20 a.m. (1020 GMT), was located 6 km northwest of American Canyon, a small town about 64 km north of San Francisco, Xinhua reported citing the US Geological Survey.

There were no immediate reports of causality or damage.