UPDATE 1-Magnitude 4.6 quake lightly rattles Los Angeles

A magnitude 4.6 earthquake struck Southern California northwest of Los Angeles on Friday, rattling a wide area around the nation's second-most populous city, the U.S. Geological Survey (USGS) said. The quake was centered about 9 miles (14.5 km) west of Thousand Oaks, a community in the coastal foothills about 40 miles northwest of downtown L.A., according to the USGS. The tremor was initially recorded at a magnitude of 5.1, but was downgraded later by the USGS to 4.6.