The occupier U.S. troops have killed 12 civilians in a drone attack in Herat province of Afghanistan, Zabihullah Mujahid, the Spokesman of Taliban, said in a statement on Tuesday.

"Criminal Americans carried out a drone strike on a civilian hatchback vehicle in Arabi Manda area of Rabati Sangi district of Herat Monday afternoon from which 12 family members, including 2 young men, 3 women & 7 children were martyred," the statement said.

Since 2001, when the U.S. began to occupy  Afghanistan, over 31,000 civilian deaths due to war-related violence have been documented; 29,900 civilians have been wounded. Over 111,000 Afghans, including civilians, soldiers and militants, are estimated to have been killed in the conflict. The Cost of War project estimated that the number who have died through indirect causes related to the war might be as high as 360,000 additional people based on a ratio of indirect to direct deaths in contemporary conflicts. These numbers do not include those who have died in Pakistan. (ILKHA)