Massive earthquake strikes California

A 7.1 magnitude earthquake struck Southern California in the United States, the biggest tremor to strike in 20 years.
The earthquake struck at the shallow depth of 0.9km and its epicentre was near the city of Ridgecrest, about 240km north-east of Los Angeles.
A 6.4-magnitude quake hit the same area on Thursday at a depth of nearly 11km.
Seismologist Dr Lucy Jones said there would be more earthquakes to follow.