London: An explosion was reported from a carriage of a London Tube train on Friday, causing injuries as panicky passengers tried to escape from the scene, witnesses and officials said.

The Metropolitan and British Transport police forces were at the scene at Parsons Green station in south-west London, the Guardian reported. But no one could provide further details on what happened.
Transport for London tweeted: “We are investigating an incident at Parsons Green.” Train services between Earl’s Court and Wimbledon on the District Line were suspended.
A witness told the daily that there were injuries at the station after a stampede.
A picture on social media showed a white bucket inside a supermarket bag, but did not appear to suggest extensive damage in the carriage, reports the BBC.
A BBC London Correspondent who was at Parsons Green on her way in to work said: “There was panic as people rushed from the train, hearing what appeared to be an explosion… People were left with cuts and grazes from trying to flee the scene.”
A commuter whose train had just left the Parsons Green station says there was panic after a woman on the platform saw what appeared to be an explosion.
Richard Aylmer-Hall said he saw several people injured, apparently trampled as they fled.
“There was a woman on the platform who said she had seen a bag, a flash and a bang, so obviously something had gone off,” he said.
Sources said that it was a home-made device that exploded. A similar kind of explosive device was also recovered from the site, sources added.