Four Jaish-e-Mohammed terrorists were killed on November 19 in Jammu and Kashmir's Nagrota area in a swift operation by the police.
Sources said the opening of the tunnel was found near Regal area of Samba sector where there is thick undergrowth and bushes.
A wireless set, medicines made in Pakistan and a QMobile were found in possession of the terrorists killed in the gun battle in Nagrota.
Police sources said that militants travelling in a vehicle, which was on its way from Jammu to Srinagar, fired on the security personnel near the Toll Plaza at Ban area.
Nagrota attack: Mortal remains of Major Akshay Girish Kumar brought to Yelahanka, family and friends mourn death
Slain major Akshay Girish saved many families in the base camp before he was gunned down by militants in Nagrota in Jammu and Kashmir on Tuesday.