An earthquake of 6.0 magnitude rocked northern California early Sunday morning.
The epicenter of the quake, which occurred at about 3:20 am local time (1020 GMT), was located 6 km northwest of American Canyon, a small town about 64 km north of San Francisco, with a depth of 10.8 km, according to U.S. Geological Survey.
There were no immediate reports of causalities or damages.