PESHAWAR - An Assistant Sub-Inspector (ASI) of police has been gunned down by unknown assailants here on Sunday. Sources said that, Mir Afzal, an ASI of Bhana Mari police station, was travelling in a taxi was on his way when he was attacked by unidentified armed men in jurisdiction of Khazana Police Station near Bakhsho Bridge. Mir Afzal received bullet injuries, while the driver remained safe.