Former Prime Minister Syed Yousuf Raza Gilani said, "I have requested the law enforcing agencies for early recovery of my son Ali Haider Gilani, but no clue is found so far." Talking to media persons here on Saturday he said, "We did not stop our election drive and supervised the polling in the constituencies of NA 148, 151, 152 and PP 200". CPO Multan Ghulam Mehmod Dogar said: "Two investigation teams are doing work on this case. I think a number of groups are involved in this case."