Four gunmen and two air force personnel were killed in an attack on an Indian Air Force base near the border with Pakistan early Saturday, military sources said.
The gunmen, suspected to be Islamic militants from the Jaish-e-Mohammed group based in Pakistan, entered the base after lobbing grenades, the sources said.
Five airmen were also injured in the attack that began before dawn at the air base in Pathankot in western Punjab state.
Pathankot is the road and rail gateway to the conflict-ridden Jammu and Kashmir state, where armed Muslim separatist groups are active.
The attackers tried to reach the technical area to destroy jet fighters and helicopters, but failed, the sources said.
At least four militants were killed in the shootout. It was not clear how many attackers had entered, but authorities said the shooting had stopped and a search operation was being conducted.