A plain clothed security official collects evidence from the site of a bomb explosion in Jamrud bazaar, about 25 km (15 miles) west of Peshawar in northwest Pakistan January 10, 2012. A bomb killed at least 23 people and wounded 26 on Tuesday when it exploded near a fuel station in Pakistan's northwestern Khyber region, one of the restive tribal areas where insurgents are battling government forces, regional officials said. REUTERS/Fayaz Aziz (PAKISTAN - Tags: CIVIL UNREST CRIME LAW)