Tribal elder Malik Subedar Nokar sustained serious injuries in a landmine explosion in Safi tehsil of the Mohmand Agency in Khyber Pakhtunkhwa, police said.
He was rushed to a nearby hospital where he succumbed to his injuries, they said.
The security forces cordoned off the area and started a search operation.
Meanwhile, four persons were arrested today by the special Unit of police for distributing pamphlets of a banned terrorist group in Peshawar.
They were distributing pamphlets of banned group asking people to join the group and not to vaccinate their children against polio virus.