An explosion on a Tube train in Parsons Green station on southwest London is being treated as terrorism, BBC quoted Scotland Yard as saying.
The Metropolitan Police said a number of people had been injured and advised people to avoid the area following the blast at 08:20 BST (07:20 GMT) at Parsons Green station.
Witnesses have described seeing at least one passenger with facial injuries, according to BBC, noting that others have spoken of panic as alarmed passengers left the train at Parsons Green station.
Commuters on a tube train reported hearing a bang and a fireball flying down the carriage during the Friday morning rush hour, the Guardian reported. Pictures and video, purporting to be from the train carriage, were posted of flames coming out of a carrier bag containing a white bucket.
Downing Street said British Prime Minister Theresa May, who is receiving regular updates on the situation, would be chairing a meeting of the government’s Cobra emergencies committee this morning. “My thoughts are with those injured at Parsons Green and the emergency services who, once again, are responding swiftly and bravely to a suspected terrorist incident,” May said.