Reports of explosion in London's underground

There are reports of an explosion on a London Underground train and it's understood some people have been injured.

Witnesses say they saw a flash and heard a blast - emergency crews are now dealing with the incident at Parsons Green station in west London.

Pictures have been posted online, showing a burning plastic container in a carriage.

Several people have been hurt - with reports of some commuters suffering facial burns and others being injured in the rush to get out.

Ambulance crews have sent a hazardous area response team to the incident.

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