Singh conveyed "strong condemnation of the unprovoked ceasefire violations by Indian occupation forces on the LoC in Khuiratta sector on November 19," the Foreign Office said.
The violations resulted in the death of four children, including three girls, and injuries to two other civilians, it said.
"The Deputy High Commissioner was told that the deliberate targeting of civilian populated areas was highly deplorable," it said.
Pakistan also expressed concern over Indian refusal of diplomatic flight clearance to Pakistani aircraft.
More From This Section
This action by the India constituted a violation of the 1991 bilateral agreement between Pakistan and India, it said.
Pakistan has summoned Indian High Commissioner Gautam Bambawale twice in less than a week - on November 10 and 14 - this month over Indian ceasefire violations at the LoC after the death of seven of its soldiers.