Militants on Sunday night lobbed a grenade at an army vehicle in Jammu and Kashmir's [Images] Udhampur district, killing one jawan and injuring four others, defence sources have said.

The army vehicle, which was on patrolling duty, was passing Chajroo on the Mahore-Gool road.

Troops from the nearby camp rushed to the spot and moved the injured to hospital.

In another incident in Baramulla, an army officer was killed and a militant was arrested during a combing operation.

Acting on specific information, troops of the 57 Rashtriya Rifles, assisted by the local police, launched an operation at Chak Rishipura, 55 kms from Srinagar [Images].

The troops noticed the movement of militants and challenged them.

The two sides exchanged fire, and an ultra was injured.

He was identified as Ilyas of the Lashkar-e-Tayiba and taken to Srinagar under police custody.

The troops then got information about Ilyas's associates.

While they were laying a cordon around the area, the militants fired from a nearby house, injuring a Captain.

The troops could not evacuate him owing to heavy rain and the he succumbed to his injuries.