At least two militants were killed and another was injured in a blast in Afghanistan's southern province of Helmand, sources said on Tuesday.
"The militants tried to plant an improvised explosive device (IED) along a main road in Naway-i-Barakzayi district on Monday, but the home-made device went off accidentally, causing the casualties among the militants," Xinhua quoted a provincial security source as saying.
The injured was detained and shifted to a hospital for treatment, he said.
The Taliban militant group has been using IEDs to target security forces, but the lethal weapon also inflicts casualties on civilians, according to military officials.
More than 3,540 civilians were killed and over 7,450 others injured in 2015 as the violence spread in different places of the country, according to a report released by United Nations Assistance Mission in Afghanistan (UNAMA) in Kabul on Sunday.
Out of the casualties, 713 civilians were killed and more than 1,650 were injured in IED attacks across the militancy-hit country in 2015, according to the report.