Residents in Los Angeles and Ventura counties reported feeling a magnitude-3.7 earthquake that struck in the mountains about 9 miles west of Castaic.
The temblor struck about 9:18 p.m. at a depth of 9 miles, the U.S. Geological Survey said. The epicenter was just north of Lake Piru.
There were no immediate reports of injuries or damages.
U.S. & World
Several hundred residents in Los Angeles' Westside, the San Fernando Valley and Ventura County cities reported feeling the shaking on the USGS website.