The attack came as both the Pakistani and Afghan wings of the Taliban have been carrying out attacks to prove they remain a potent force and bolster their profiles in case peace talks prevail in Afghanistan.
U.S. and Afghan officials have said they hope the Afghan Taliban will use bin Laden's death as an opportunity to break their link with al-Qaida — an alliance the U.S. says must be severed if the insurgents want peace in Afghanistan. But Afghan officials and Pakistani experts say any severing of ties would not happen anytime soon, if at all.
"The Taliban want to prove that bin Laden's killing did not really affect them," said Rahimullah Yusafzai, a Taliban expert in the Pakistani city of Peshawar who has interviewed their reclusive leader, Mullah Mohammed Omar.
"I don't think anybody is talking peace at this stage," Yusafzai said. "Everybody is wanting to score something on the ground. I think the spring fighting, the summer fighting will continue and it will be worse than last year."
In claiming responsibility for Friday's attack in northwest Pakistan, which also wounded about 120 people, the Taliban said it was avenging the May 2 death of bin Laden. It cited anger at Pakistan's military for failing to stop the unilateral U.S. raid on bin Laden's hideaway.
"The Pakistani army has failed to protect its land," Ahsanullah Ahsan, a spokesman for the Pakistani Taliban, told The Associated Press in a phone call.
In Afghanistan, where bin Laden's death has coincided with the beginning of the spring fighting season, the Taliban have launched a series of attacks including a two-day battle in the insurgents' stronghold of Kandahar in the south.
"Violence has increased because this is part of the peace process," said Mohammad Masoom Stanekzai, a top adviser to Afghan President Hamid Karzai who is active in efforts to reconcile with the Taliban. "When you get to the point where everybody wants to position themselves to get the benefit of a dialogue and discussion, then you naturally expect there will be a lot of efforts to strengthen positions."