"In retaliation for the murder of Aharon Gross, a student in a Hebron satellite yeshivah of Mercaz HaRav Kook, in an operation masterminded by Livni, three operatives of the group, Shaul Nir, Barak Nir, and Uzi Sharbaf, wearing ski masks, launched an attack on the Islamic College in Hebron on July 26, 1983.On arriving at the target, off a crowded Hebron street, Nir fired two bursts from his Kalashnikov in the air to signal that the area was clear.