A statement from the army's media arm alleged that Indian troops violated the ceasefire on the LoC and "carried out unprovoked firing" in Hotspring and Jandrot sectors.
The firing continued from 10pm to 11pm Pakistan time and the soldier was killed at Kundi post, the statement said.
The LoC has witnessed several clashes since last week that have left two Indian soldiers and as many Pakistani soldiers dead.
Officials of the two sides have traded angry charges over the violation of the ceasefire that was put in place in late 2003.