These included committing arson of apartments and cars owned by left-wing public figures; setting off a bomb near the home of a surgeon who had transplanted the heart of an IDF soldier into an East Jerusalem Arab; and the uprooting of trees along the Avenue of Righteous Gentiles at the Yad Vashem Holocaust memorial.
[8] Some targets of the Sicarii' dummy grenades included Gershon Shaked, Hayim Be'er, Hareetz publisher Amos Schoken, and Hebrew University of Jerusalem rector Yoram Ben-Porat.
[9][10] Some victims of their arson attacks include Dan Almagor, Sesame Street TV actress Sarai Tzuriel and pollster Mina Zemach, who had published a survey saying that 54% of Israelis were in favor of peace talks with the PLO.
Sicarii claimed that the incident, which became known as the Jaffa Gate shooting, was an act of retaliation for the previous week's stoning attack on Jews at the Western Wall.
[3][11][12] In early January 1990, Sicarii claimed responsibility for planting a dummy grenade under the car of the wife of deputy Prime Minister Shimon Peres.
[5] In March 1989, the Israeli Police began an investigation into the Sicarii attacks after the group claimed responsibility for setting fire to the door of Petah Tikva mayor Dov Tavori.
[6] During the early stages of the investigations, some members of the Israeli police said that Sicarii might not be a terrorist group at all, but rather that their actions were isolated extremists' work.
[6] In May 1989, the General Security Service arrested 8 Kach party activists over the Sicarii attacks, interrogated them for an hour, and then released them on bail.