Border Security Force (BSF) is in touch with all the agencies and thorough investigations are on to establish from where the three terrorists entered Gurdaspur district of border state of Punjab on Monday. BSF Director General DK Pathak visited Gurdaspur Sector of Punjab Frontier yesterday and issues of the current terrorist incident and forthcoming challenges were discussed amongst the officers of the force and Punjab police.<br/><br/>Highly placed sources told AIR that security and intelligence agencies are exploring all aspects in detail before coming to final conclusion that from where the terrorists came from. Mr Pathak was briefed about the present security arrangements to meet the challenges of guarding the border especially in riverine areas on the International Border with Pakistan.