2007 : Taliban chief Baitullah Mehsud responsible for President Bhutto 's slaying . Mehsud 's former aide , allegations , blames him for killing her . Bhutto was assassinated in December 2007 at campaign headquarters .
Report : Taliban chief Baitullah Mehsud responsible for Benazir Bhutto 's slaying . Mehsud 's former aide makes allegations , blames him for killing Muslims . Bhutto was assassinated in December 2007 at campaign rally .