SWAT At least 11 persons, including two Army personnel, four women and a policeman, were killed while 42 others got injured when a suicide bomber blew himself up near a convoy of security forces at Nishat Chowk, Mingora, on Monday. Sources informed that suicide bomber was a pedestrian who detonated his explosive jacket when he reached near a convoy of security forces. The intensity of the bomb could be judged from the fact that it not only jolted the entire city but also damaged 10 army vehicles and 12 shops. The rescue teams and ambulances rushed towards the blast site soon after the blast and started their activities. The injured were shifted to Saidu Sharif Hospital, Swat. Several injured were stated to be in critical condition. The injured also included seven Army personnel. The security forces cordoned off the area and imposed curfew in the city. The commoners were stopped to approach the blast site to avert casualties in the expected follow-up blast. According to bomb disposal squad, around eight to nine kilograms explosive material was used in the attack. DIG Malakand Idress Kamal said that it would be premature to say either the blast was a car bomb blast or a suicide attack, adding the investigations were underway. Agencies add: A suicide car bomber targeting an army convoy killed 11 people including two soldiers in Swat district on Monday, just months after the military claimed to have quelled a Taliban insurgency. The bomber blew up a vehicle packed with explosives as security forces drove through Mingora, the main town of Swat where the military has sought to reassert control after putting down the uprising. Shops and cars were damaged in what was the deadliest attack in the former tourist district since a suicide bomber flung himself at a military convoy killing 45 people on October 12 in Shangla. Witness Rahim Gul said the blast occurred as two vehicles carrying security forces passed through the busy Nishat intersection, which is surrounded by small shops and stalls. But the security forces vehicles appeared to be undamaged, Gul said. Television footage of the scene showed a string of cars in the road that were gutted or had blown-out windows. A fire truck arrived to extinguish fires ignited by the blast. Heavily armed security forces guarded the area. Frightened women and children could be seen scurrying from the scene. I was going for some work in the bazaar but was stopped by security forces because the army convoy was moving, said Saeedur Rehman, a 45-year-old teacher. Moments later, a car hit the tail end of the military convoy. Suddenly there was a huge blast and smoke filled the area. Then heavy firing started and I lay on the ground, Rehman told AFP. Four women, two children were among the killed, City Police Chief Qazi Ghulam Farooq told AFP, adding that of the 39 people injured, four were in a serious condition. It was a suicide car bomb.... The target was an army convoy, Major Mushtaq Ahmad Khan from the Swat Media Centre told AFP. Ive seen three vehicles destroyed by the blast, Reuters photographer Hazrat Ali Bacha said by telephone from the site in the centre of the town of Mingora. Prime Minister Yousuf Raza Gilani condemned the bombing. Such inhuman acts of terrorism would not be able to shatter the determination of the people of Pakistan and the people of Swat... to curb this menace and fight the insane extremists, a statement from his office said. On December 1, a suicide bomber killed a provincial lawmaker as he received guests at his home in Swats Kanju town, about 30 kilometres northwest of Mingora. Military is now engaged in fighting in the northwest tribal belt along the Afghan border, where the core Taliban leadership and Al-Qaeda-linked militants are holed up in the rugged mountain terrain. More than 3,000 people have been killed in suicide and bomb attacks across Pakistan since July 2007 in a deadly campaign blamed on militants.