The suspected leader of the July 7 London bombers, Mohammad Sidique Khan, took sick leave from his mentoring job at Hillside primary school, Beeston, Leeds, to visit Pakistan with another terrorist group member.

Records released under the Freedom of Information Act show he was absent sick in autumn 2004 when caught on camera at Karachi airport with Shehzad Tanweer, 22, who blew up the Aldgate tube train.

Khan, 30, resigned after taking unauthorised leave. The Liberal Democrat MP Greg Mulholland said his exploitation of the benefits system would add to the public's revulsion.



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