At least 10 people were killed and more than 20 were injured in a fuel truck fire in the high-altitude Salang Tunnel in the Afghan province of Parwan on Sunday, according to Abdul Afzali, head of the provincial disaster management department.

Earlier in the day, the provincial security chief stated that the incident killed one person and injured 34 others. The truck was traveling from Baghlan to Kabul when it caught fire inside the tunnel.

"As a result of the accident in the Salang Tunnel, 10 people were killed, more than 20 were injured," Afzali said in an address broadcast by local media.

The road has already been cleared and is now open to traffic, according to the state-run Bakhtar News Agency.

The Salang Tunnel is located in the Hindu Kush mountains at an elevation of over 3,200 meters (10,499 feet) above sea level, near the eponymous pass. It serves as the only link between Kabul and Afghanistan's northern provinces.