Chandigarh, June 27: An alert has been sounded in Punjab's border district of Pathankot on Sunday after two explosives-laden drones crashed into the high-security Indian Air Force station at Jammu airport, officials said.

Tight vigil is being maintained near key installations in Pathankot, they said.

Five years ago, the Pathankot Air Force base had come under terror attack.

Patrolling has been strengthened near sensitive areas in and around Pathankot and additional forces have been deployed, police said.

“We are on our guard in view of the situation. Whenever there is an incident of this kind, maximum alert is sounded in neighbouring areas," Pathankot's Senior Superintendent of Police, Surendra Lamba, told PTI over phone when asked if additional security measures have been put in place in wake of the Jammu incident. Jammu Air Force Station Blast: Use of Drones Suspected in 2 Low Intensity Explosions at the Airport.

“We are checking vigorously our inter-state border movement. We have deployed additional forces also,” he said, adding, specialised commandos and SWAT teams of Punjab Police are being deployed strategically. Checking of vehicles headed to Jammu and entering Pathankot from J-K side has been intensified, Lamba said.

The drones crashed into the Air Force station at Jammu airport in the early hours of Sunday. Two IAF personnel were injured in the explosions that took place around 1.40 am within six minutes of each other. Jammu And Kashmir: Two Explosions Reported In Technical Area of Jammu Air Force Station; No Damage To Any Equipment.

The first blast ripped off the roof of a single-storey building at the technical area of the airport manned by the IAF in Satwari area of the city. The second one was on the ground, the officials said.