Islamabad , Pakistan ( CNN ) -- The Pakistani Taliban claimed responsibility for Saturday 's blast in that Asian nation 's tribal region , an explosion at a food distribution point that killed at least 43 people and injured 90 others . Azam Tariq , the central spokesperson for Pakistani Taliban , told CNN in a phone call that it targeted people who had formed what he called a pro-government and anti-Taliban group . The blast took place about 600 meters from a U.N. World Food Programme distribution point at a security check post in Khar , according to Amjad Jamal , a spokesman for the agency . He said that more than 300 people were going through a security screening to get food and other items at the time of the explosion . Khar is the headquarters of Bajaur Agency , one of the seven districts of Pakistan 's tribal region bordering Afghanistan . Jamal said that those who had been internally displaced during military efforts in Bajaur Agency get a month 's supply of food and other goods . Dr. Muhammad Hanif , a senior medical officer of Bajaur Agency 's headquarters hospital in Khar , told CNN that 43 dead bodies and 90 injured people had been brought to the hospital . Jamal said all staff members of the World Food Programme and its partner organizations are safe , but added that all four of the program 's food distribution points in Bajaur Agency have been temporarily closed for security reasons . Still , the U.N. agency will continue to provide services elsewhere in the country , Jamal said . Responding the question that whether the suicide bomber was a woman , the Pakistani Taliban 's Azam Tariq said , `` We have thousands of male suicide bombers ready who are keenly waiting for their turns . Then why would we use a woman , which is against the traditions of Islam ? '' U.S. President Barack Obama issued a statement condemning Saturday 's `` outrageous terrorist attack , '' which he called `` an affront to the people of Pakistan and to all humanity . '' `` The United States stands with the people of Pakistan in this difficult time , and will strongly support Pakistan 's efforts to ensure greater peace , security and justice for its people , '' Obama said . The blast took place a day after about 150 militants fired at five security checkpoints in Mohmand Agency -- another of the seven districts in Pakistan 's volatile tribal region along the Afghan border -- killing 11 soldiers . Security forces later killed 40 militants who were among the group , authorities said Saturday . The security forces pounded militant hideouts in Mohmand Agency with helicopter gunships , said Maqsood Amin , a senior government official in the area . Twenty-four militants were killed during retaliation Friday while 16 were targeted Saturday . CNN 's Chris Lawrence contributed to this report .
NEW : President Obama says the `` outrageous terrorist attack '' is `` an affront ... to all humanity '' The Pakistani Taliban claims responsibility for the blast , which killed at least 43 people . A U.N. spokesman says over 300 people were going through security to get food .