Attack injures one police official in Sui area.Explosion kills officers Nasruddin, Rahim Ali.Injured official transferred to hospital in Sui.In a shocking incident, two policemen were martyred and one injured in a grenade attack on a police vehicle in the Sui area of Dera Bugti district, Balochistan.  According to police officials, unidentified assailants threw a hand grenade at a police mobile unit...