Five Afghan police were killed after Taliban militants stormed a checkpoint of Border Police Force in Badghis Province 555 km northwest of Kabul late Sunday night, spokesman of provincial administration Sharafudin Majidi confirmed Monday.

"The Taliban rebels attacked a checkpoint of Border Police Force in Balamurghab district late last night, leaving five policemen dead," Majidi told Xinhua.

Another policeman was injured in the offensive, he added.

Some Taliban militants were also killed in the firefight, the official said, but he did not give an exact figure.

Taliban militants fighting the government and NATO-led forces in Afghanistan announced Saturday to launch their spring offensive codenamed "Khalid Bin Waleed" from April 28 and had intensified activities since then.