Kuntar was one of a four-man group that crossed into Israel by sea, sent on the mission by the Palestine Liberation Front (PLF), an affiliate of Yasser Arafat's PLO.
In the coastal town of Nahariya, the terrorists shot dead a policeman and forced their way into an apartment building, where they captured Danny Haran and his daughter, Einat, 4.
While the terrorists rampaged through the apartment, firing weapons and detonating grenades, Haran's wife Smadar hid in a crawlspace above the couple's bedroom together with their other daughter, two-year-old Yael, and a neighbor.
In an effort to prevent Yael from crying out and alerting the terrorists to their whereabouts, Smadar kept her hand over the child's mouth, and accidentally smothered her to death.
Meanwhile Kuntar and his group took Danny and Einat Haran to the beach.
"There, according to eyewitnesses, one of them shot Danny in front of Einat so that his death would be the last sight she would ever see," Smadar wrote later.
"Then he smashed my little girl's skull in against a rock with his rifle butt. That terrorist was Samir Kuntar."