6.4-magnitude earthquake jolts Southern California

WASHINGTON

An earthquake jolted Southern California on Thursday, according to the U.S. Geological Survey.

The epicenter of the 6.4-magnitude quake is 11 miles from Ridgecrest city of Kern County. Tremors were also felt in Las Vegas.

At least 25 aftershocks were recorded after the first jolt.

There were no immediate reports of casualties.

The Kern County Fire Department tweeted it was "working nearly 2 dozens incidents ranging from medical assistance to structure fires in and around the city of Ridgecrest".

President Donald Trump said he has been briefed on the earthquake by the authorities. "All seems to be very much under control!" he tweeted.