Two Taliban militants were killed as their explosive device went off prematurely in Baghlan province 160 km north of capital Kabul on Wednesday, provincial police chief Assadullah Shirzad said.

"Three Taliban militants were busy in planting mine on a road in Bagh-e-Shamal village outside provincial capital Pul-e-Khumri early this morning but the device exploded prematurely killing two rebels on the spot and injuring another," Shirzad told Xinhua.

The injured militant has been taken to hospital, he added.

Taliban fighters are yet to comment.