"Grim reminder of the challenges in Kashmir, while we celebrate the colours of spring and try to attract tourists 3 brave policemen are killed," Omar wrote on micro-blogging site Twitter.

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Militants on Monday shot dead three unarmed policemen, who had gone for investigating a crime in a village in Shopian district.

Sub Inspector Ghulam Mustafa was shot at and injured by two  pistol-borne militants in a bus which was on its way to Pattan, a police official informed.

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Omar, the working president of National Conference (NC), expressed condolences to the bereaved families of the slain policemen.

"My condolences to the families of the 3 police personnel killed in the line of duty in #Shopian today. May their soul rest in peace," he expressed.

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