"It was a suicide attack," army spokesman Major General Shaukat Sultan said. The attackers "rammed their white car into a military convoy when it was heading to Mir Ali, a major town in North Waziristan (tribal area) at 10:30 am," he said.
The spokesman said the security forces would give a response, but declined to give details. The attack, which was carried out at Baka Khel area, left four soldiers deal and eight injured.
Witnesses said the injured soldiers were taken to a military hospital in Bannu and were stated to be in a critical condition.
The vehicle of the security forces, which was targeted in the attack, was destroyed. No one has claimed responsibility for the attack. The spokesman said that an investigation has been launched and efforts were underway to identify the bombers.
