London tube blast as it happened: Police identify suspect in Parsons Green terror attack; no arrests made so far

A blast on a train at Parsons Green station injured some people. Reuters[/caption]A Metropolitan Police spokesman said, "Police were called at approximately 08:20hrs on Friday, September 15 to Parsons Green Underground Station following reports of an incident on a tube train.""Officers from the Metropolitan Police Service and British Transport Police are in attendance along with the London Fire Brigade and London Ambulance Service. We would advise people to avoid the area," the spokesperson added.While the nature of the explosion is not yet known, Met Police bomb squads and fire crews have been rushed to the station along with ambulances. Armed police are also at the scene.Foreign Secretary Boris Johnson appealed for calm. "I'm afraid my information is limited and it really is important not to speculate at the moment. Obviously, everybody should keep calm and go about their lives in a normal way, as normal as they possibly can," Johnson was quoted as saying by The Telegraph.Eyewitnesses from shops outside the station have reported seeing people with facial injuries. Many have been told to stay in lockdown until the police gives an all clear.A Metro reporter at the scene was quoted by the paper as saying that a white container exploded on the train and passengers had suffered facial burns.She said they were "really badly burned" and their "hair was coming off".Twitter user @Rrigs posted pictures of a white bucket smouldering on a train.