The vast majority of new entries in the 9/11 Timeline this week are related to the 7/7 and 21/7 London bombings. Lead bomber Mohammad Sidique Khan was already radicalized and linked to two future suicide bombers in 2001, when, four years before the attacks, a computer expert warned British police about two of the bombers. Hasib Hussain, another of the bombers, visited Pakistan in the years before the bombings, as did Shehzad Tanweer, who met militant leaders linked to Jaish-e-Mohammed there. Khan visited Israel, shortly before British Islamist bombers performed a bombing there.