Unknown miscreants gunned down another vaccinator of anti-polio campaign here in Khyber Agency on Saturday.

Khasadar Force sources said that the firing incident took place near anti-polio centre in tehsil Jamrud of Khyber Agency.

A vaccinator of polio immunization campaign was killed in the fire while others survived unhurt.

A search operation was launched in the area after placing strict cordon off but the attackers managed to escape.