ANTI-TERROR police tracked the London bombers a year before the attack - but ditched the operation because they thought the four posed no threat, a police source said today.
Intelligence chiefs monitored the four - including Huddersfield-born Jermaine Lindsay, 19 - and dozens of other Muslims after they were thought to be potential terrorists.
Despite police keeping tabs on the four - who were marshalled by Dewsbury teacher Mohammed Sidique Khan, 30 - the operation was axed as they "did not fit the preconceived terrorist profile."
A year later, Shehzad Tanweer, 22, and Hasib Hussain, 18, from Leeds, met Khan and travelled to Luton to meet Lindsay.
The four went to London, where they blew themselves up with explosives in rucksacks. The attacks on July 7 killed 52 people on Tube trains and a bus.
