On July 4, 1975, a bomb hidden inside a refrigerator exploded in an appliance store at Zion Square in the center of Jerusalem, killing 15 civilians and wounding 77 others. A Jewish passerby named Shabtai Levi unknowingly helped a Palestinian man carry the booby-trapped refrigerator, which contained approximately 5 kilograms (11 lb) of explosives, into the store. Two people who worked near Zion Square, Esther Landner and Yehuda Warshovsky, grew suspicious of the appliance. Landner called the police, but the refrigerator detonated while she was still answering questions from the responding officers.
Among those killed were Rivka ("Ribbie") Ben-Yitzhak, 35, an American citizen, and her husband Michael, who left behind two young children. In their memory, the Israel Museum established the Ben-Yitzhak Award, presented annually to an outstanding children's book illustrator. Daoud Khoury, an Arab accountant employed at the King David Hotel, was also among the dead.
The Palestinian militant group the PLO claimed responsibility for the bombing. It was later revealed that the attack had been carried out by Ahmed Jabara, also known as Abu Sukar, an Arab-American originally from Turmus Ayya. Jabara was assisted by Bassem Tabila of Nablus, who fled to Jordan and avoided arrest.
Following an investigation conducted by Shin Bet and the Israel Police, Jabara was arrested and tried before a military court in June 1977. He was convicted and sentenced to life imprisonment plus an additional 30 years.
In 2003, Jabara was released after serving 27 years in prison, as a gesture by the Israeli government toward Yasser Arafat. Shortly after his release, Jabara called for the kidnapping of Israeli soldiers at a rally in Bethlehem, a statement that received wide coverage in Palestinian media. Arafat subsequently appointed him as an adviser on prisoner affairs. Jabara died of a heart attack in Ramallah on July 17, 2013, at age 78.