Another attack on London:
LONDON, July 21 - Just two weeks after a string of attacks on buses and subways in London that killed 56 people, the British police evacuated three subway stations in the city today after explosions that sent commuters into a panic. But casualty numbers appeared to be low. The police said the Oval subway station in south London, Shepherd's Bush in the west and Warren Street in central London had been evacuated. There was also a small explosion on the No. 26 bus that blew out the bus windows, police said.
Police with sniffer dogs took up positions outside some of the stations and set up cordons, while sirens blared from ambulances racing to the scene. Initial reports from witnesses said smoke had been seen at one station.
"There were four explosions, or attempts at explosions," Sir Ian Blair, the head of Scotland Yard, said.
So far there have not been many serious injuries reported, which is the bright side.