An earthquake of 6.0 magnitude has been detected in northern California, the US Geological Survey said.
The quake's epicentre was eight km (five miles) northwest of the town of American Canyon in the San Francisco Bay area.
There were no immediate reports of damage.
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A teenage boy is being questioned over the attack on a child in a park in Manchester.
Police have released CCTV in a bid to catch the thieves who raided a children's play centre, taking money from collection boxes and a till.