The global positioning system (GPS) sets recovered from the three terrorists killed in Punjab's Gurdaspur district on Monday reportedly revealed that the assailants had come from Pakistan's Shakargarh area.

The GPS track showed that the terrorists sneaked into Dinanagar town following the rivulets along the Indo-Pakistan border, according to sources in intelligence agencies and Punjab Police, IANS reports.

"The terrorists used the route of along the border belt and reached Bamiyal town. While observing that security in the Jammu region, which is very close, was tight, the terrorists moved towards Dinanagar town," a police official told IANS.

Dinanagar town is located 12 km from the India-Pakistan border and is 25 km from the Jammu and Kashmir border and 235 km from Chandigarh.

The forensic experts from Chandigarh reached the police station to examine the evidence collected after the gunbattle, which took place for more than 11 hours, on 27 July. The forensic team will also look for clues to establish the terrorists' identities. They also examined the car that was hijacked by the terrorists.

"We are examining clues from their clothes and other things that they were carrying," a forensic team official said.

The Punjab Police, National Security Guard and the Indian Army together killed the three terrorists who were holed up inside the police station throughout the day. Eight people, including three civilians and five policemen, were also killed in the terror attack.