Chaudhry Nisar Ali Khan, said at a news conference the Cabinet Committee on National Security planned to review Pakistan's intelligence cooperation with the United States, Dawn News reported.
He said Pakistan planned to ask the United Nations Security Council and other international bodies to consider U.S. drone strikes in Pakistan's territory.
Hakimullah Mehsud, head of the Taliban since 2009, was killed Friday when drones hit his vehicle. Four other people, all believed to be militants, died.
Nisar said the identity of the target of the attack was irrelevant.
"The government of Pakistan does not see this drone attack as an attack on an individual but as an attack on the peace process," Nisar said.
The Taliban council elected a new leader Saturday, Dawn reported.
Khan Said Sajna, 36, is credited with masterminding a jailbreak last year that freed 400 inmates in a Pakistani prison, and is believed linked to an attack on a Pakistani naval base in Karachi.
He was elected by a vote of 43-17 by 60 members of the Pakistan Taliban council. His election was not confirmed by the council's splinter groups.
A Taliban official described Sajna as having "no basic education, conventional or religious, but he is battle-hardened and has experience of fighting in Afghanistan."