Islamabad , Pakistan ( CNN ) -- The Pakistani Taliban claimed responsibility Friday for suicide attacks on a military training facility in the nation 's northwest , saying they were carried out in retaliation for the killing of terrorist leader Osama bin Laden . The twin suicide bombings killed at least 80 people , nearly all of them military recruits who had just completed their training , said Bashir Ahmad Bilour , a senior provincial minister . About 140 others were wounded . `` Pakistani and the U.S. forces should be ready for more attacks , '' said Ihsan Ullah Ihsan , a spokesman for the Pakistani Taliban , who accused the Pakistani military of having alerted the United States to bin Laden 's location . `` Osama was our great leader and the killers of Osama will have to pay its price , '' he said . The back-to-back explosions took place shortly after scores of recruits had left the Shabqadar Fort , a training facility in the district of Charsadda , said Jahan Zeb Khan , a senior police officer . Afterward , video of the blood-soaked ground outside the training facility showed it littered with burned vehicles and broken glass . The recruits had just completed a nine-month training program when the attackers struck . The district of Charsadda borders Mohmand Agency , one of seven districts in Pakistan 's tribal region along the Afghan border . Mohmand is believed to be a hideout for Taliban fighters and al Qaeda-linked militants fleeing last year 's military operation in the district of South Waziristan and ongoing U.S. drone strikes in North Waziristan . The Pakistani army has carried out numerous ground and air operations in Mohmand but it has not been able to stamp out the militants . The Pakistani Taliban represent a confederation of Taliban groups in northwestern Pakistan , where they are based , said Bill Roggio , military-affairs analyst who is managing editor of The Long War Journal . Those fighters attack targets in Pakistan and across the border in Afghanistan . The group , which is headquartered in Quetta , is different from the Afghan Taliban , which has been focused on re-establishing the Islamic Emirate in Afghanistan . Both groups swear allegiance to Taliban leader Mullah Omar and have close ties to al Qaeda , he said . Last December , some 150 militants ambushed six security checkpoints in Mohmand , killing 11 Pakistani soldiers , officials told CNN . Earlier in December , a twin suicide attack targeting a government building in Mohmand killed at least 40 people . `` They 're clearly trying to disrupt our bilateral relationship through this attack , '' State Department spokesman Mike Toner told reporters . `` But it 's also clear that they are going to carry out these kinds of attacks no matter what . '' But Imran Khan , a Pakistani opposition party leader , said the attacks show that the Pakistani government is doing a poor job managing the crisis . `` Unfortunately , we do not have a trustworthy , credible government , '' the chairman of Pakistan 's Tehreek-e-Insaf ( Movement for Justice ) Party told CNN . `` That 's why I 'm calling for the resignation of our own government , free and fair elections and a new , credible government , '' he said . He cited government figures that cite 34,000 deaths and a $ 68 billion loss to the nation 's economy as a result of terrorism . `` The people of Pakistan are dying under this war on terror , '' he said . Khan said Pakistan would be in a better position if it would simply decline U.S. aid . `` Unfortunately , if Pakistan is considered a hired gun of the U.S. , it reduces its capability to win this war on terror , '' he said . `` If this becomes Pakistan 's war , I think Pakistan will win the war . But if it 's perceived that the Pakistani army is a mercenary army of the U.S. , we have no chance of winning . '' He added , `` They target Pakistan because Pakistan is perceived as America 's agents . That 's why you see the sort of carnage that 's taking place today . '' Prior to 2004 , there were no suicide attacks and no militant Taliban in Pakistan , he said . But things have changed . `` Here 's a country that had 500 bomb blasts last year . '' The vast majority of the fighters are tribal people who are neither terrorists nor religious fundamentalists , he said . `` They are fighting as a result of Pakistani military operations in the tribal area . So a credible government should have peace talks with them and then isolate the al Qaeda , which has worried the West . '' CNN 's Samson Desta and journalist Nasir Habib contributed to this report .
NEW : An opposition figure calls on Pakistan government to refuse U.S. aid . The attacks are in retaliation for the death of bin Laden , Pakistani Taliban say . The recruits had just completed a nine-month training program .