At least 25 people have been killed and 78 wounded in a bus fire in central China, state media reports.

The incident happened in the city of Chengdu, the capital of Sichuan province. More than 10 people escaped from the burning bus.

Images posted on blogs and state TV showed the bus in flames, with bloodied people standing and lying near the bus.

The cause of the fire was not immediately known. An investigation is now under way.

The fire began as the bus travelled into central Chengdu during the morning rush hour.

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