Today in Britain, memorials are being held to mark the one week anniversary of the coordinated bomb attacks that killed more than 50 and wounded more than 700 people. Among the events was 2 minutes of silence that was observed across the European Union. Late Wednesday, Scotland Yard continued its raids, searching another house northwest of London, but no arrests were reported. News reports have identified three Britons of Pakistani descent as suspects in the bomb attacks. Britain’s Press Association, citing police sources, said that police had identified a fourth suspect, but no name or details were reported.