London police say a man they shot to death in front of horrified subway riders Friday was "directly linked" to their investigation of recent bombings aimed at the city's transit system.
The man, who was wearing a thick coat despite the fact that it was a about 21C in the British capital, ran from plainclothes police who challenged him at the Stockwell subway station one day after four failed bombings.
Citing security sources, Britain's Sky Television said the man was not believed to be one of the four would-be bombers.
A London police spokesman said only that "the gentleman shot at Stockwell today has yet to be identified, so it would be impossible to link him to anything at this stage."
However, police continued to say the shooting was part of an operation related to the bombing probe.
A statement issued on Friday afternoon said the man who was shot "was under police observation because he had emerged from a house that was itself under observation because it was linked to the investigation of yesterday's incidents.
"He was then followed by surveillance officers to the station. His clothing and his behaviour at the station added to their suspicions."
Subway lines closed after shooting
The shooting happened shortly after 10 a.m. local time at the Stockwell station, which is close to the Oval station, one of the four sites of Thursday's attempted bombings. The Northern and Victoria subway lines, which run through Stockwell station, were shut down in the wake of the shooting.
Separately, a man was arrested in the Stockwell area later in the day after police released security-video photos of four suspects. It was not clear whether he was one of the four.
Police said the man shot in the subway was pronounced dead at the scene.
"He half-tripped and was half-pushed to the floor," passenger Mark Whitby told the British Broadcasting Corporation. "I didn't see him carrying anything."
Whitby said he saw a police officer fire five shots into the man, whom he described as South Asian and wearing a thick coat.
Eyewitnesses say the man ran into the subway station, vaulted over a barrier, ran down some stairs and tripped. Plainclothes officers then reportedly shot him in the head.
Gun use rules changed after July 7
While most police in Britain do not carry guns, officers with special licences can do so.
The standard policy saying officers should not use a gun except as a last resort was changed after the July 7 bombings, giving police the authority to shoot suspected suicide bombers first and ask questions later.
On Thursday, four people tried to set off explosive devices on three subways and one bus. The lunchtime attack caused no injuries, except for one person who was hospitalized for an asthma attack.
The July 7 bombings killed 56 people and injured more than 700.
No community a target, say police
Shortly after Friday's subway shooting, the Muslim Council of Britain issued a news release asking why police had targeted a man of South Asian origin.
Ian Blair, the head of Scotland Yard, said the investigation is not targeted against any section of any community in the United Kingdom, though three of the four suspects identified by police in connection with the July 7 bombings were British-born Muslims of Pakistani origin. (The fourth suspect was a Jamaican-born British citizen.)
Blair appealed for calm from all of the nation's ethnic communities as the investigation continues.