Parts of Southern California has been rattled by a 7.1 magnitude earthquake in the biggest tremor to strike in two decades.
According to US meteorologists, the quake struck at the shallow depth of 0.9km (0.6 miles) and its epicentre was near the city of Ridgecrest, about 240km north-east of Los Angeles.
Concise News understands that a 6.4 magnitude quake hit the same region on Thursday at a depth of nearly 11km.
“This is an earthquake sequence,” seismologist Dr Lucy Jones said at a press conference.
She said there was a 10% chance of a similar or even larger quake following in the next week.
But Dr Jones said it was not likely the quake would trigger shocks on other fault lines.