The BSF officials unearthed this tunnel on Thursday near Nikki Tawi river in Jammu sector.
"We have detected a well-constructed tunnel on International Border (IB) in RS Pura sector of Jammu district today," a senior BSF officer said.
This is the fourth tunnel unearthed by the BSF in the region since 2012.
"We were carrying out our regular clearing operations, done monthly, when we found a well-constructed tunnel," he said, adding that it was being dug out with JCB.
"We were suspecting some activities across the border. There were late night movements. People used to come late in night to the post across".
The tunnel is approximately 10 feet below the ground and has a length of 30 metres from their end to this side, he said.
"But it was blocked on our side. It was dead end. It had no exit as they could not complete it further. It came close to the border fencing," the officer said.
"One person can sit and easily move inside the tunnel which has came up in the vicinity of Allah-Mai-Di-Kothi BoP of ours from Pakistan Post of Afzal, he said, adding that a probe was on.
OneIndia News (With agency inputs)