Violence Escalates in Pakistan's Northwest

ISLAMABAD, Pakistan, August 12, 2008 — -- A bomb ripped through a Pakistani air force van this morning outside the Northwest city of Peshawar, killing seven air force members and at least six civilians in an attack that Pakistani Taliban threatened would be repeated unless a campaign against them was abandoned.

For the last six days, Pakistani paramilitary officers have launched mortars, artillery and helicopter gunship attacks on militants in Bajur, a region where the local Taliban has a close relationship with al Qaeda. At least 150 militants and 13 soldiers have been killed since last Wednesday, according to a spokesman for the military.

A senior al Qaeda leader is believed to be among the dead, a local security official tells ABC News. Abu Saeed al-Masri has been described as al Qaeda's accountant. Military spokesman say they cannot confirm whether al-Masri was in fact killed, and the U.S. so far has not commented. Al-Masri would be the highest ranking al Qaeda fighter killed in Pakistan since an American drone killed Abu Khabab al-Masri, one of al Qaeda's chief bombmakers, near the Afghan border earlier this month.

The Pakistani Taliban spokesman said the attack on the air force van was a direct response to the government's offensive. "It is an open war between us and them," Maulvi Umar told The Associated Press. "If this kind of operations continue against us in Swat and in the tribal areas, we will continue this."

The bomb, which witnesses say was planted on a bridge but the Taliban claims was a suicide attack, destroyed the air force van as well as civilian vehicles. The dead included a 5-year-old girl.

Video of the aftermath shows a 10-foot-wide crater in the bridge and the smoldering wreckage of the Mazda van a few feet away.

"Suddenly a flash blast took place," eyewitness Allah Noor told reporters on the bridge. "I also fell on the ground. I've just come back after changing my clothes which are covered in blood."

The fighting in Bajur is a major operation for the Pakistani Frontier Corps, the underfunded front-line troops fighting the militancy in the northwest. They have suffered heavily in the current operation and were forced to abandon a base over the weekend. But the military insists it will continue the campaign "until the logical conclusion, when all the militants in the area have been defeated," Major General Athar Abbas, the army's chief spokesman, told ABC News.