Islamabad , Pakistan ( CNN ) -- A car bomb exploded Thursday at a northwest Pakistan camp for internally displaced people , killing 12 people and injuring 32 others , police said . The Jalozai camp is located about 35 kilometers ( 22 miles ) outside of Peshawar and houses hundreds of thousands of people who have left the country 's volatile tribal region . Authorities estimate the car contained 30-35 kilograms ( 66-77 lbs ) of explosive material . Three other vehicles were destroyed in the blast . People at the camp were returning after receiving their rations -- packages containing basic supplies like rice , flour and soap , according to Noor Akbar Afridi , the head of the camp . About 200,00 people live at the camp . Some of those injured and killed were with a World Food Program affiliate that distributes the food aid . Khyber Pakhtunkhwa , of which Peshawar is the capital , is rife with Islamic extremists and has been the site of recent clashes between Pakistani security forces and militants . It was formerly known as the North West Frontier Province , a name assigned during the British colonial rule . The ruling party changed the name to reflect the province 's majority Pashtun population .
NEW : About 200,00 people live at the camp . The camp houses internally displaced people from northwestern Pakistan . An estimated 30-35 kilograms of explosives were used in the car bomb . Militants have a strong presence in the region , which borders Afghanistan .