On 25 December 2010 , at least 47 people were killed Killing and over 100 others injured Bodily_harm , after a female suicide bomber Terrorism detonated Attack her explosives Attack in a large crowd of people displaced by fighting Hostile_encounter , who were collecting Come_together food at a distribution Dispersal centre of the World Food Programme in the Pakistani town of Khar , which is located within the Bajaur tribal region , of north-western Pakistan .