Peter Walker

The presumed suicide bombers who killed themselves and 52 other people in London on July 7 checked out their targets a week beforehand with an apparent dummy run of the attack. Grainy stills from closed-circuit television cameras issued by the police showed three of the four men assumed to be the attackers gathering together before heading into the capital on June 28.

A massive police hunt for the remaining fugitive London bombers appeared to be paying off on Friday as officers launched a massive raid in the capital, reportedly targeting another of the wanted men. Residents of the White City suburb saw police swiftly seal off streets before a large explosion was heard, followed by a series of smaller blasts.

British Prime Minister Tony Blair made an impassioned plea on Tuesday for the world to unite against terrorism and refuse to "give one inch" to their demands. Blair also said he supports giving police expanded powers of detention under proposed changes to anti-terrorist laws in the wake of the London bombings.