Awami National Party (ANP) local leader Abdul Razzaq and his brother were killed in an explosion in Balochistan's Harnai district on Friday morning.
Deputy Commissioner Harnai, Abdul Salam Achakzai told DawnNews that the bomb may have been planted in their vehicle.
According to the deputy commissioner, the bomb went off as soon as the two men entered their car to travel to Pishin to participate in a public meeting.
The explosion destroyed the ANP leader's vehicle completely.
Levies forces and the police reached the spot; investigation into the incident is underway.