Two suicide bombers attacked a camp for refugees in northwest Pakistan Saturday, killing at least 41 people and wounding more than 60 others. Police say the bombers struck minutes apart at the Kacha Pukka camp for displaced people as residents lined up to register for aid. Officials say the bombers were wearing burqas - the full body covering worn by conservative Muslim women. Reuters news agency says about 300 people were waiting in line at the time of the attack. The camp houses people fleeing violence in the Orakzai district, where Pakistani forces have recently intensified an offensive against Taliban militants. Northwest Pakistan has suffered a major internal displacement of people as a result of Taliban violence and a series of military operations targeting Islamist militants near the Afghan border.