Suicide Bombers

RFE/RL reports that London police are going on the theory that last Thursday's blasts were the work of suicide bombers:

Police say they have identified four suspects, and say it is very likely that at least one of the suspects was among the at least 52 people who were killed in the bombings.

Police said they had security camera film of the four suspects meeting at the King's Cross rail station in central London shortly before the 7 July bombings.

British news reports said at least three of the suspects were believed to be British men of Pakistani origin.

Incidentally, on the question of terminology ("suicide bomber" versus "homicide bomber", and the rest), see Eugene Volokh's recent post, which gives a decent airing to most sides of the argument.