Counter-terrorism commando force National Security Guard has been deployed at the IAF Srinagar and Jammu stations to provide anti-drone cover to these vital installations, the force's director general M A Ganapathy said on Saturday.
Investigators scanned CCTV footage, including from cameras installed on the boundary walls of the airport, in an effort to determine from where the drones came. However, all the CCTV cameras focused on the roadside, the officials said.
Investigators are also examining the possible use of drones to drop the explosives at the airport that has various assets of the IAF, they said.
In what is the first time Pakistan-based terrorists have used drones to strike vital installations, two bombs were dropped at the Indian Air Force station in Jammu airport in the early hours of Sunday, officials said.
A first information report (FIR) was registered Sunday under the Unlawful Activities (Prevention) Act after two explosives-laden drones crashed into the Indian Air Force station at Jammu airport, officials said, while indicating that the case is likely to be taken over by the terror probe agency National Investigation Agency.
The IED that pierced the rooftop of one of the IAF buildings at the Jammu airport carried less than one kg of RDX and a cocktail of other chemicals whereas the one that was dropped on the ground contained a little over one kg of the deadly explosives along with some ball bearings.
Drones have added a new dimension to security threats from terror groups and investigations into the attack on the Jammu IAF station last month show the involvement of "non-State actors" supported by State actors such as the ordnance factory of Pakistan, Jammu and Kashmir DGP Dilbag Singh said on Tuesday.
Coming to the rescue of stranded passengers in Jammu and Ladakh regions, India Air Force on Tuesday airlifted 203 stranded people from Leh town to Jammu.
With hundreds of people left stranded due to inclement weather, the Indian Air Force on Saturday launched fresh operation by ferrying 550 passengers, including 300 civilians between the two capital cities.
"Our house is gone, household goods have perished and all our animals killed. We did not have anything to eat," said Chamail Singh of Rajouri district while showering praise on Indian Air Force for air-dropping food items and other relief material.