Pakistan Army began indiscriminate firing and shelling on Indian positions in Gulpur.
A territorial Army jawan and his wife were killed and their two minor daughters injured in firing by Pakistan.
35-year-old army jawan Showkat, who had come on a leave to spend time with family, and his 3-year-old wife Safiya were killed after sustaining critical splinter injuries of mortar shell, the official said.
The Foreign Office said in a statement that Director General Mohammad Faisal (South Asia and Saarc Desk), summoned Deputy High Commissioner J.P. Singh and condemned the "unprovoked" ceasefire violation by Indian forces on Saturday in Chirikot and Satwal sectors.
They were referred to District Hospital Poonch, where they are undergoing treatment.
Kashmir has been divided between India and Pakistan since the end of British colonial rule in 1947.
Sources said militants fired from AK-47 rifles towards the army patrol.
Indian security forces unleashed brutal use of force on civilian population living at Line of Control as the people in the occupied Kashmir valley are observing first death anniversary of Burhan Muzaffar Wani.
"Two civilians died in Pak firing in Poonch sector this morning", police here said.