The Criminal Investigations Department (, "Mishtara Tzva'it Hokeret", abbr. "Metza'"h) is a brigade-level unit in the IDF responsible for all criminal investigations involving military personnel. The unit primarily deals with the use of drugs in the army, and theft of and dealing in army weapons. Other investigations include corruption, sexual harassment and assault, suicides, killings and abuse of civilian Palestinian population (done by a special unit that works in the West Bank), and treason. The unit also deals with traffic accidents involving military vehicles.