Mazar-i-sharif, Jan 06 (Agencies): Militants attacked a gas well in northern Afghanistan but were repelled before causing any damage to the structure, police said on Wednesday.

A police officer was missing following the attack near the town of Sheberghan in the gas-rich northern province of Jawzjan, said provincial police chief Abdul Aziz Ghairat.

"At around 11:00 pm (1200 IST) last night, a group of armed militants attacked the gas exploitation field in Jarq Duq area," the police commander said, referring to the site of several gas wells.

Security guards and police repelled the attackers, who were armed with rifles, Ghairat said. The attack did not cause any damage, he added.

He said the rebels were linked to the Taliban, which has been fighting an insurgency against the Western-backed Afghan Government and around 140,000 US-led foreign troops since the 2001 US-led invasion brought down their regime.

While there have been thousands of military and civilian deaths during the conflict the rebels have tended not to attack Afghanistan's infrastructure.