ISLAMABAD, Sept. 11 (Xinhua) -- A polio worker and a policeman were killed in firing by unknown gunmen in Pakistan's northwest Khyber Pakhtunkhwa (KP) province, according to police officials on Wednesday.
Unknown miscreants riding on a motorcycle opened fire at a polio vaccination team in Salarzai area of Bajaur district of the province, said the police in the area.
The attackers fled the scene after carr
