CaptionA commuter, still clutching his morning newspaper, leaves Edgware Road Underground Station after a suicide bomb attack. The bomber blew himself up on a train at the station, killing seven passengers - one of four coordinated attacks on London's public transport system during the morning rush hour. The bombs exploded within 50 seconds of each other on London Underground trains, and the fourth bomb occurred on a bus less than an hour later. The explosions resulted in some 56 deaths (including those of the four bombers) and 700 injuries. Surveillance video footage showed that the four men had been working together, but the motivation for the bombings remains unclear. Some believe the attacks had been planned by Islamist paramilitary organizations based in the United Kingdom. Intelligence services have claimed links between the bombers and al-Qaeda.
