Lt Col Niranjan, a member of the NSG's Bomb Disposal Squad, was killed while he was defusing the grenade at the scene of the terror attack as part of the combing operations that continued through the night. Four other security men were also injured in the blast.
Defence sources said Niranjan, a resident of Kerala, was killed while trying to retrieve the grenade from the body of a dead terrorist.
Four attackers, a Garud commando and three DSC were killed yesterday when heavily-armed Pakistani terrorists had attempted to storm the base, triggering a day-long gunbattle at the airbase, barely 35 kms from the Indo-Pak border.
Among those battling for their lives in the hospital are 8 DSC personneland a Garud commando.
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The official said the operation will end only after a
thorough search, going on inside the IAF base and nearby areas, was completed.
Various security agencies,including the Army, Indian Air Force, Central forces and Punjab Police were involved in the joint operation.
IAF helicopters were also seen flying over the base and nearby areas to assist the ground forces in the operations.
In the wee hours yesterday, the group of terrorists in army fatigues had attempted to storm the base with the obvious intent of destroying MiG-21 fighter jets and MI-25 attack helicopters housed there.
The attackers were believed to have infiltrated from Pakistan and there was speculation that they may belong to Jaish-e-Mohammad headed Maulana Masood Azhar of the Kandahar hijack episode.
The terrorists were carrying Under Barrel Grenade Launchers, 52 mm mortars, AK rifles and GPS machine.
Defence sources said the terrorists sneaked into the nearly 2000-acre air base through a forested area where they were confronted by the Quick Reaction Team of Garud commandos.They managed to go up to 400 metres but were still 700 metres away from the area where the IAF aircraft fighters were stationed.