A suspected suicide bomber was shot on the London Underground today.
Scotland Yard said: "We can confirm that just after 10am today armed officers shot a male at Stockwell underground station."
Passengers evacuated from the station described seeing armed police chasing a suspect before opening fire.
There were unconfirmed reports that police believe the man who was shot was one of the attackers involved in yesterday's incidents.
Witness Mark Whitby, speaking to BBC News 24, reported the man was shot five times at close range after he had jumped on a train.
The train was standing in the station with its doors open when the Asian man ran on, pursued by three plain clothes officers. He tripped and was also pushed to the floor and one of the officers shot him five times.
Mr Whitby said the Asian man was dead.
A large area around Stockwell Tube Station, an interchange for the Northern and Victoria lines in south London, was cordoned off and traffic approaching the area ground to a halt.
An ambulance and several police cars were also at the scene and sirens were heard blaring in every direction.
Tube services on the Victoria and Northern lines were suspended following a request by the police, London Underground said.