A Polio immunisation programme coordinator was killed and a policeman was injured when their vehicle was attacked in the restive Khyber Pakhtunkhwa province of northwestern Pakistan on Friday, police said.

Unidentified assailants opened fire on the vehicle of Dr Abdur Rahman in Bajaur district when he was on his way back home from the district hospital, SHO Mamond Police Station, Dilawar Khan, said.

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The Rescue 1122 team provided medical aid to the injured persons and shifted them to the district headquarters hospital in critical condition.