The document summarizes the 2005 7/7 London bombings carried out by four British men - Mohammad Sidique Khan, Shehzad Tanweer, Hassib Mir Hussain and Germaine Lindsay. Khan, Tanweer and Hussain were born in Britain to Pakistani parents, while Germaine was born in Jamaica but raised in Britain. The bombers detonated three bombs on underground trains and one on a bus during the morning rush hour, killing 52 people including themselves and injuring over 770. The attacks shocked the world as the bombers were British citizens rather than foreign terrorists, demonstrating that terrorist threats could come from within one's own country.