The police say they have a specific man as a suspect for being the organiser (though they haven't named him), who was on a 'watch list' here - but it only meant hisarrivla in the country was noted.
Detectives also revealed that a suspected al-Qaeda operative entered Britain via a channel port two weeks before the attack. Although his name was on a security watch list he was not put under surveillance, as he was not regarded as being of sufficiently high risk. He is believed to have left the country hours before the attacks.
Intelligence leads suggest that the four British bombers were approached by the mastermind of the attacks, a British Pakistani Muslim, while they were abroad.
http://www.timesonline.co.uk/article/0,,22989-1695383_2,00.htmlAnd ABC News in the USA say one of the bombers was linked to arrests made last year (the arrests were hurried, because the USA revealed the name of the Pakistani computer specialist, to justify raising the alert level for the Democratic convention, and 5 men got away)
ABC News, citing unidentified officials, reported that the attacks were connected to an al-Qaida plot planned two years ago in Lahore, Pakistan. Names on a computer seized last year from Muhammad Naeem Noor Khan, an alleged Pakistani computer expert for al-Qaida, matched a suspected cell of young Britons of Pakistani origin, the report said.
Authorities have now discovered ties between Mohammed Sidique Khan - one of the July 7 bombers - and members of that suspected cell, ABC said.
http://www.guardian.co.uk/worldlatest/story/0,1280,-5142867,00.html