A man is in fighting for his life in hospital after being hit in the head by an oncoming Tube train when he "bent over to get his bag" at Stockwell station.
Fellow commuters took to Twitter describing the scene as "horrific" as the man was struck by a train coming into the Northern Line platform at around 9am today (Friday) morning.
According to the Independent, passengers reported hearing screaming from the platform and seeing "blood everywhere" before they were evacuated.
The Evening Standard reports that one witness wrote online: "Just saw a poor guy get his head pretty much sliced off by the tube @ stockwell as he bent over to get his bag. Poor guy. Hoping he's ok :(."
But a Tube worker told the paper: "Thankfully his head was in one piece. But there was a lot of blood as there would be with an injury like that.
"The driver actually did very well to stop to the extent that he could when he did."
A London Ambulance Service spokesman told the BBC: "We treated a man reported to be in his 20s for head injuries and he was taken as a priority to Kings College hospital."
Pictures of the scene have been uploaded to Twitter, showing police and even an air ambulance on site.
Some Twitter users have now been calling for barriers to be put up on platforms, with one writing: "The incident at Stockwell station is horrific. So sad. @TfL how many more people have to die before you put barriers by the track!"