KABUL , December 16, SPA -- Four Afghan police officers were killed by a roadside bomb in western Afghanistan, government officials said Wednesday. The policemen were killed after their car was hit by a roadside bomb Tuesday night in Rubat-i-Sangin district, north of the city of Herat, according to the Afghan Ministry of Interior. Noor Khan Nekzad, a spokesman for the police chief in Herat province, said the patrol vehicle was destroyed by the blast. According to the Afghan Defense Ministry, militants planned or carried out 6,787 bombings and suicide attacks in the country so far this year. Of those attacks, 3,170 took place, while 3,617 bombs had been defused before they were detonated, according to a report of the Associated Press.--SPA --SPA 12:49 LOCAL TIME 09:49 GMT www.spa.gov.sa/728752