Kabul, Rajab 11, 1434, May 21, 2013, SPA - A powerful roadside bomb killed six policemen in western Afghanistan on Tuesday when their vehicle hit the explosives buried in the road, an Afghan official said. Tuesday's explosion in Herat province was so strong that the police truck was completely destroyed in the blast, District Police Chief Sher Agha said, adding that there were no survivors. The policemen were guards on the Salma dam project and were on their way to Herat city, the provincial capital, when they hit the roadside bomb in Obey district, Agha was quoted as saying by the Associated Press. --SPA 11:42 LOCAL TIME 08:42 GMT www.spa.gov.sa/1112485