The arrested al-Qa'eda leader blamed for organising the September 11 attacks was betrayed by Mohammed Abdel-Rahman, the son of the man who ordered the first bombing of the World Trade Centre, it emerged yesterday. Abdel-Rahman, 30, an Egyptian known to his followers as "the Lion of God", was arrested in Pakistan last month. His capture, a serious setback for al-Qa'eda, was kept secret in the hope that more would follow. Pakistani officials said that, under duress, he had divulged information about the head of al-Qa'eda's military committee, Khalid Sheikh Mohammed, with whom he had been hiding. With intercepted mobile telephone...