At least 41 people have been killed in a double suicide bomb attack at a camp for displaced people in north-west Pakistan. Officials said the death toll could rise as more than a dozen of the rest 64 injured people are in critical condition. Earlier in the day a blast went off at the registration point of the Internally Displaced persons camp on the outskirts of the city of Kohat. The second blast occurred ten minutes later when people rushed to the scene to rescue. Police said the blasts took place when food relief were being distributed to the displaced people who fled from a military operation in Orakzai tribal region.Meanwhile, an extremist group named " Lashkar-e-Jhangvi Al-alami" claimed responsibility for the blasts.