Mohammad Sidique Khan (October 20, 1974 - July 7, 2005) was the oldest of the four men responsible for the 7 July 2005 London bombings, in which bombs were detonated on three London Underground trains and one bus in central London suicide attacks that killed 52 people and injured over 700. Khan bombed the Edgware Road train in which seven people died, including himself. On September 1, 2005, a videotape emerged in which Khan gave his reasons for the attack. Wikipedia
MI5 was piecing together the double life of Mohammad Sidique Khan, the oldest of the bombers, who worked at a school in Beeston, Leeds. www.timesonline.co.uk/article/0,,22989-1693463,00.html
The full text of the videotape of Mohammad Sidique Khan, one of the four 7 July bombers, which was aired on Arabic television channel al-Jazeera and in which he explains his motives. news.bbc.co.uk/1/hi/uk/4206800.stm
The definitive Wikipedia entry for Mohammad Sidique Khan. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Mohammad_Sidique_Khan