BBC
Tube cleared after minor blasts
Minor explosions using detonators only have sparked the evacuation of three Tube stations and the closure of three lines, a BBC correspondent has said.
Police cordoned off large areas around Warren Street, Oval and one of the Shepherd's Bush Tube stations.
A route 26 bus in Hackney Road in Bethnal Green had its windows blown out by a blast. There were no injuries.
Police in London say they are not treating the situation as "a major incident yet".
One person was injured at Warren Street. There were reports the injured person may have been holding a rucksack containing the detonator.
The whole of the Northern Line has been suspended, along with the Victoria Line and the Hammersmith and City line.
A number of other stations were closed including Westminster tube station, Waterloo station and King's Cross Thameslink. There were also reports that St Paul's tube station was closed.
Tony Blair cancelled events in the afternoon and will be attending a meeting of the Cobra committee along with Foreign Secretary Jack Straw.
The BBC's Andrew Winstanley said devices had been found but appeared to have been dummies, containing no explosives.
London Underground went to an amber alert with trains taken to the next station and evacuated.
An eyewitness at Oval station said there had been a small bang, and a man had then run off when the Tube reached the station.
Police have set up cordons round the stations
A spokesman for Stagecoach said the driver of the number 26 bus travelling through Shoreditch had heard a bang on upper deck, gone upstairs and seen the windows were blown out.
The bus driver was very shaken but said to be fine.
At Shepherd's Bush station, police told reporters that a man had threatened to blow himself up and then ran off.
Sosiane Mohellavi, 35, was travelling from Oxford Circus to Walthamstow when she was evacuated from a train at Warren Street.
"I was in the carriage and we smelt smoke - it was like something was burning.
"Everyone was panicked and people were screaming. We had to pull the alarm. I am still shaking."
The BBC's Rory Barnett said there had been no smoke on the platform at Warren St.
Liz Edwards, who works near Warren Street Underground station, said the area was full of activity.
"There are police, fire engines and ambulances all around there. A guy from our office had just come back from the station and said the police were aggressively keeping people away from the station and that you could not get anywhere near it."
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