Four civilians were killed in separate blasts in Afghanistan, as Taliban militants torched six fuel tankers destined for NATO forces in southern region, officials said Sunday. The civilians, including a child and a woman, were killed in a total of four separate blasts in eastern provinces of Khost, Nangarhar and Paktika and western province of Ghor on Saturday, the Afghan Interior Ministry said in a statement quoted by the German Press Agency "DPA". Eight other civilians, including four women, were injured in the attacks, it said. Three of the blasts were triggered by roadside bombs, which were planted by "enemies of our country", the statement said, referring to Taliban fighters. The fourth explosion was caused by an old rocket shell, the statement added. Separately, Taliban militants torched six fuel trucks near the capital city for southern province of Ghazni on Sunday morning, Abdul Ghani, a senior police official in the province said. The trucks were en route to the southern province of Kandahar for NATO forces, he said, adding that the attackers fled the area before police forces were deployed.