7 July bomber was known to security services but was not viewed as immediate threat

The BBC reports that Mohammed Sidique Khan, the suspected leader of the 7 July London bombings, had come to the attention of security officials several times before the blasts occurred.

BBC Home Affairs correspondent Margaret Gilmore said that on re-examining old intelligence analysts had decided that Khan was not an immediate threat - he was thought to be "peripheral" and was not investigated further. Khan and three other men killed 52 people and themselves by detonating bombs on three Tube trains and a bus.

Information about Khan's employment record has been released by Education Leeds following a request under the Freedom of Information Act.

Security bodies 'knew of bomber' (BBC website, 5 February 2006)