A group of militants infiltrated into Indian territory near Chakla forward post of Pallanwala sector of Akhnoor tehsil, police officials said.
Troops of Naga regiment challenged and fired on them, they said, adding heavy exchanges took place.
In the firing exchanges, an Army jawan died, they said.
Defence Spokesman M Mehta said an infiltration attempt took place in Pallanwala sector this morning.
"Fire fight ensued and one jawan died. Search is in progress", the spokesman said.