The murders of Koby Mandell and Yosef Ishran occurred on 8 May 2001, when two Jewish teenagers, Yaakov "Koby" Mandell and Yosef Ishran, were killed on the outskirts of the Israeli settlement of Tekoa in the Israeli-occupied West Bank, where they lived with their families. The identity of the killers has never been determined, though Israel and a number of sources state that unidentified Palestinian terrorists were responsible.