LOS ANGELES (AP) - A light earthquake has shaken Southern California, and authorities say there have been no reports of damage or injury.

The United States Geological Survey reports that the quake with a preliminary magnitude of 4.0 occurred just after 2 a.m. Thursday.

It was centered about eight miles (12 kilometers) northeast of Trabuco Canyon, California, which is located 31 miles (49 kilometers) southeast of Anaheim.

The quake had a depth of about 6 miles (10 kilometers).