According to sources, the Pakistani army also suffered numerous casualties in the "strong and effective" retaliation by the Indian troops as several of their posts were also destroyed.
The officials said cross-border firing between the two sides continued till 4.15 am on Sunday, and added that there was no report of any casualty or damage on the Indian side.
Colonel Devender Anand, Defence Ministry spokesman said Pakistan army resorted to unprovoked ceasefire violation on the LoC in Poonch sector on Thursday night.
Havaldar Patil Sangram Shivaji, was critically injured in the Pakistani firing in the Lam area of Rajouri district's Nowshera sector around 1 am and later succumbed to the injuries.
The officials said SI Rakesh Doval deployed at the BSF artillery battery at the LoC in Baramulla was killed after he sustained head injury in the firing around 1315 hours.
This is third consecutive day that the Pakistan Army has targeted hamlets and posts with mortar bombs and heavy firing triggering fear and panic among the residents along the LoC.
Azerbaijan and Armenia have been locked in a bitter conflict over Karabakh since Armenian separatists backed by Yerevan seized control of the mountainous province in a 1990s war that left 30,000 people dead.
One witness said they were woken by a huge blast that levelled an entire square block of one- and two-floor houses in the early hours of the morning, leaving nine apartments destroyed.
Azerbaijan claims to have made gains in Karabakh in recent days, with its defence ministry saying that 14 settlements have been taken as well as a strategically important plateau.
