ISLAMABAD, Jan 15 (Reuters) - An explosion at an Afghan refugee camp in northwestern Pakistan killed two people on Monday, police said, but the cause of the blast was not immediately known. The explosion rocked a mud-walled house in Jalozai camp, near the city of Peshawar not far from the border with Afghanistan where several, mostly small, explosions have occurred over the past year. "The roof of a room collapsed and at least two people were killed and a few injured," a senior police officer Mohammad Tahir told Reuters. He said the blast could be an act of terrorism, though police were investigating. A car bomb last month killed one person in the city. Pakistan has been home to millions of Afghan refugees since 1980s when Afghans fled their homeland to escape the war against Soviet occupation. Most of these refugees are living in the North West Frontier Province, of which Peshawar is the capital.
