Provincial security chief Gen. Khalilullah Andarabi confirming the report said the convoy included 18 oil tankers and 4 other trucks of NATO supplies.
Gen. Andarabi further added the incident took place early Wednesday morning around 3:00 am local time.
He also said at least two drivers of the oil tankers and the trucks were injured following the incident.
According to Gen. Khalilullah Andarabi the main reason behind the incident is still unclear however a tanker driver said the incident took place following an explosion.
No group including the Taliban militants have so far claimed responsibility behind the incident.