Drones have been pressed into service to pinpoint the location of the terrorists who have taken positions in the forest on a hilly terrain in Jammu and Kashmir’s Anantnag district, officials said as the operation to flush out the ultras entered the third day on Friday.

The terrorists killed four security personnel on Wednesday. “The forces fired mortar shells on the terrain where they believe the terrorists are hiding, based on drone surveillance,” the officials said. Colonel Manpreet Singh, commanding officer of 19 Rashtriya Rifles unit of the Army, Major Ashish Dhonchak, Deputy Superintendent of J&K Police Humayun Bhat and a soldier were killed in an encounter with terrorists at Gadole in  Kokernag of the south Kashmir district on Wednesday.