PESHAWAR: Six men including two polio workers were kidnapped from a rural area in Frontier Region Tank, official sources told Dawn.com on Monday.

Sources said that a driver accompanying a team of polio vaccination workers and three Khasadar security personnel were also picked up by unknown people while the team was on routine duty in Peeng village in FR Tank.

Sources added that the kidnapped men included Dr Khandad and Fareed Taleem Ullah, who were working for the polio vaccination program.

No militant group has so far claimed responsibility of the kidnapping.

The incident comes a day after a policeman deployed for a vaccination campaign was killed in a bomb attack in Peshawar.

FR Tank lies on the outer boundaries of Khyber Pakhtunkhwa’s Tank district and separates it from the Federally Administered Tribal Areas (Fata) governed by tribal laws.

Pakistan is one of only three countries where the crippling polio virus remains endemic.

According to the WHO, Pakistan recorded 91 cases of polio last year, up from 58 in 2012. It warned earlier this year that Peshawar is the world’s “largest reservoir” of polio.

More than 40 health workers and police personnel providing security to teams administering anti-polio drops to children have been killed in incidents of violence in the country since December 2012, according to a tally by news agency AFP.