The army retaliated by shelling suspected militant hideouts in the area. The Pakistani Taliban, which claimed responsibility for the attack, issued a statement saying it was ready for talks with the government.
The blast ripped through a private van hired by the Frontier Corps to take troops from Bannu in Khyber-Pakhtunkhwa province to North Waziristan tribal region, a safe haven for Taliban and Al Qaeda elements.
The explosion occurred at 8.45 am (Pakistan time) when the van was parked at a parade ground in the cantonment. "Frontier Corps troops were sitting inside the vehicle and lined up for move to North Waziristan Agency," the statement said.
Military sources said six bodies were mutilated beyond recognition. "DNA tests are being carried out to identify them. Fifteen injured in a very critical condition were shifted to a military hospital in Peshawar by helicopter," a source said.
Also Read
"Our nation is united against extremism and terrorism and the sacrifices rendered by our citizens and personnel of law enforcing agencies will not go in vain," Sharif said. Earlier, he strongly condemned the attack.
Shahidullah Shahid, spokesman for the banned Tehrik-e-Taliban Pakistan, said in a statement his group carried out the attack to avenge the killing of its leaders.