British and Pakistani intelligence teams assisted by the Punjab Elite Force on Sunday picked up three men after British authorities gave Pakistan a list of telephone numbers dialled from London bomber Shehzad Tanweer's residence in the UK. The three men were from Sialkot, Gujranwala and Lahore. Intelligence sources told Daily Times that the UK government had prepared a list of numbers dialled from Tanweer's UK residence to Pakistan and asked the Pakistanis to investigate the links he had with the people he called. "The three men are businessmen and Shehzad Tanweer's family friends," sources added. The men were freed after interrogation.Also, the government has asked all agencies to update their data on seminaries in Pakistan with details on foreign students who have returned to their countries or were still enrolled. Separately, agencies continued cracking down on militants in the Punjab and arrested six people from Faisalabad, Kamalia and Sargodha. One of the men is Qari Usman, wanted for trying to kill President Pervez Musharraf. Qari Usman works with the banned Jaish Muhammad.