According to details, 28-year old Nur Alam and 20-year old Sher were heading towards Dera Ismail Khan for purchasing medicine when unknown assailant opened fire at them, killing the brothers on the spot.
The culprits managed to escape the scene after carrying out the crime.
Law enforcement agencies arrived at the scene after the incident and shifted the corpses to a hospital. The bodies were handed over to the relatives of the deceased persons after post mortem.
The family members of the slain brothers said that the victims had no enmity with anyone.
Police has filed a double-murder case against the unknown criminals.