PESHAWAR: An accidental blast destroyed a shop in northwest Pakistan on Saturday, killing at least three people, officials said, unnerving a city frequently bombed by militants.

Police said initially that a bomb had exploded near a fast food restaurant. Hours later two police officers and a local government official said it was an accidental blast.

“We did not find any substance which indicated it was a bomb,” said Peshawar police chief Liaqat Ali Khan.

Pakistan’s army, which heavily supported militant groups in their war against the Soviet occupation in Afghanistan, now faces a stubborn Taleban insurgency on its own soil and mounting US pressure to root out militants in tribal border areas.

Peshawar has been hit the hardest by bombings blamed on militants.

Aside from a loss of life, the violence has also had a psychological and financial toll.

Standing at the scene of Saturday’s blast, where people on the second floor of a burning building pleaded for help, taxi driver Noorzada Khan tried to make sense of all the violence that has kept residents at home and deprived him of business.

“They’re professional killers. They’re doing all this for money. They must be funded from outside. They cannot run such things alone,” he said. Foreign Minister Shah Mahmood Qureshi condemned the latest wave of violence and said Pakistan’s will would not be broken.

“Such reprehensible acts can never defeat our national resolve to fight out terrorism and militancy,” he said in a statement.

On Friday night, up to 40 militants attacked an army checkpoint, killing one soldier, a security official said.

Soldiers at the checkpoint on a bridge in Wana, the main town in the Islamist bastion of South Waziristan, retaliated after coming under fire, said the security official.

The military has said it made gains in a major offensive in October in South Waziristan.

But militants have carried out retaliatory bombings, killing hundreds of people and pressuring increasingly unpopular Pakistani President Asif Ali Zardari to neutralize the insurgency as he fights for his political survival.

Some Pakistanis seem to be losing confidence in security forces.

“I don’t know what’s happening? How do they enter Peshawar city with explosives or explosive-laden vehicles? What are police or other agencies doing?,” asked university student Tahir Khan.

“People hate the Taleban. We’re angry about what they’re doing but someone has to give us security and control them or eliminate them.” That is unlikely to happen soon, as evidenced by the attack by suicide bombers and gunmen near army headquarters, the biggest challenge to the writ of the state since October.

US President Barack Obama highlighted Pakistan’s struggle against militants this week in outlining his plans to send 30,000 more troops to Afghanistan.

In one of his most important speeches, he called on Pakistan, the third largest recipient of US aid, to crack down harder on militants to help US troops fight the Taleban in Afghanistan.

He warned that Washington would not tolerate Pakistan allowing its territory to be a safe haven for militants.