AT least 10 Frontier Constabulary personnel were killed and four others injured when a suspected suicide bomber rammed his explosives-laden car into the checkpost in Haleem Zae area of Mohmand Agency on late night Sunday, report private TV channels. The bomber hit his explosive laden car against the Nakai checkpost wall when 10 personnel out of 15 were busy in dinner. FC personnel opened fire on the assailant to stop him from approaching the post, but of no avail. The attacker succeeded in his attempt and blew up his car at the checkpost that caused a huge explosion, completely destroying the checkpost and killing at least 10 FC personnel on the spot. The explosion was so powerful that it completely gutted the roof of the checkpost, burying ten personnel. No group has claimed responsibility for the attack. Security forces cordoned off the area and traffic on several roads was suspended as rescue workers rushed the wounded and bodies to nearby hospitals. The forces also increased vigilance in the area. The security forces also arrested a few suspicious persons and started investigations. Political administration also expressed the possibility of presence of militants in nearby mountains, while the FC and security forces have called in more troops to expedite search operation. Strongly condemning the attack, President Asif Ali Zardari described it a cowardly act. He directed the law enforcement agencies to apprehend the culprits involved in this heinous act and bring them to justice. The President announced compensation of Rs100,000 for the dead and Rs50,000 for the injured. He directed the authorities concerned to ensure proper treatment of the injured. In his condolence message to the bereaved families, he prayed to Allah Almighty to rest the departed souls in eternal peace and grant courage to the bereaved families to bear the irreparable loss with fortitude. Prime Minister Syed Yousuf Raza Gilani also strongly denounced the suicide bombing. He said those playing with the lives of innocent people would not escape the wrath of Allah and the law of the land. He directed the law enforcement agencies to keep a strong vigil on the miscreants and apprehend the culprits involved in anti-state activities. Gilani reiterated firm resolve of the government to fight the menace of terrorism and extremism with an iron hand. Meanwhile, suspected US spy drones fired missiles on Sunday into an alleged militant compound in a tribal area bordering Afghanistan, killing at least seven people, security officials said. The airstrike in South Waziristan - a known hub of Al-Qaeda and Taliban activity - was the latest in a string of attacks on Pakistani soil that have raised tensions between Islamabad and Washington. The strike targeted a compound about 20km northeast of Wana, the main town in the tribal zone, the officials said. "Initial reports say at least seven people were killed in the missile strike, which destroyed the facility," one senior security official told AFP. There was no immediate confirmation of the strike from the Pakistan Army or from the US-led coalition in Afghanistan. Sunday's strike was the 12th such incident in the past 10 weeks, all of which have been blamed on US-led coalition forces or CIA drones based in Afghanistan. US and Afghan officials claim northwest Pakistan is a safe haven for Al-Qaeda and Taliban militants who sneaked in from Afghanistan after the fall of the Taliban regime in late 2001. But President Asif Ali Zardari has vowed zero tolerance against violations of his country's sovereignty amid the strikes, which have stoked anti-US sentiment in Pakistan. Last week, 11 people were killed when suspected US spy drones fired missiles into a school in North Waziristan set up by veteran Taliban militant Jalaluddin Haqqani, a major target for US forces, security officials said.