The earthquake struck at 7:28 a.m. Thursday morning, and it was centered 3.5 miles northwest of Malibu and 4.9 miles southwest of Agoura Hills, according to the U.S. Geological Survey. It was about 6.

ONTARIO, Calif. - A preliminary 3.5-magnitude earthquake shook Southern California Saturday morning, according to the U.S. Geological Survey. The quake struck just after 10 a.m. Saturday, and the epicenter was about three miles southeast of Ontario. The small earthquake registered at a depth of about 6 kilometers.

At 10:34 a.m., a 3.9-magnitude quake hit 3.7 miles north-northwest of Eastvale, near the 3.5-magnitude quake close to Ontario and Eastvale around a half hour earlier. the U.S Geological Survey reported.