Updated 4.25pm - Added video

At least 30 vehicles have collided in heavy fog on a motorway in eastern China, killing more than a dozen people and injuring 19 others.

The official Xinhua News Agency said the pile-up on Wednesday morning in Fuyang, a city in Anhui province, caused several vehicles to catch fire.

It cited local police as saying as well as 18 fatalities, 19 people were injured - nine seriously - and were being treated in a hospital.

Xinhua said the accident caused several miles of traffic congestion and that an investigation was under way.

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