Mohammad Sidique Khan (30) and Shehzad Tanweer (22) arrived together at Karachi Airport in November 2004 and returned to Britain in early February. Hasib Hussain (18) the youngest of the three ethnic Pakistani Britons came separately at an undisclosed time last year, also to Karachi, and went back to Britain shortly afterwards, added the officials. The security officials said they had not been able to trace the movements of the bombers while in Pakistan. Iqbal Khattak adds: Interior Minister Aftab Sherpao denied reports that any arrests were made in Faisalabad or Multan. âWe are fulfilling our responsibility by helping the British government. But I would not like to give the details of our assistance,â he told reporters.