President Asif Ali Zardaris father, Hakim Ali Zardari has said that former President Pervez Musharraf was involved in the assassination of Benazir Bhutto and due to backing of important people in the country, the killers cannot be arrested. Hakim visited the residence of former bureaucrat Abdul Sattar Dero in Karachi on Thursday to condole his mothers death. While talking to a private TV channel, Hakim Zardari said that past governments of the PPP were never tolerated and survival of the current government depended on the international affairs. He said that MQM was blackmailing the PPP-led government while Pir Pagaras predictions carried no value. 'When Bilawal Bhutto Zardari formally steps into politics, Pir Pagara will not be in this world, he added.