Afghan security forces investigate at the site of a bomb attack in Kabul June 6, 2014. Two bombs exploded outside a hotel in western Kabul where Afghan presidential frontrunner Abdullah Abdullah was holding a rally, striking his car and injuring his bodyguards, the candidate said on Friday. Police said two people were killed and 16 wounded in the attack on Abdullah's convoy, the first such incident in Afghanistan's on-going election campaign. REUTERS/Omar Sobhani (AFGHANISTAN - Tags: CIVIL UNREST POLITICS)