British, Italian cops grill 21 suspects

Investigators arrested seven people Sunday at a four-story brick apartment building in Brighton, on England's southern coast, and also searched another home in the city. They gave few details about what role the six men and seven women were suspected of playing in the failed July 21 attacks on the capital's transit system.

So far, 18 people are in custody in Britain and three in Italy.

Police say the four suicide bombers who carried out the July 7 attacks, which killed 52 victims, are all dead. And they believe they have arrested all the failed July 21 bombers, whose explosives detonated only partially and took no lives.

Now they are searching for those who may have recruited and directed the attackers and built the explosives, anxious to catch them before they or other would-be bombers they command strike again.