According to Levies sources, a Dalbadin bound passenger bus coming from Quetta was stopped by unknown militants in Mastung area of Balochistan.
The armed men off loaded the passengers at gun point and set the bus on fire by sprinkling petrol.
The culprits fled from the scene after leaving the passengers stranded.
However, no loss of life was reported in the incident but the motive to burn the coach remains a mystery.