On 15 July 1980, MIR guerrillas killed 43-year-old Lieutenant-Colonel Roger Vergara Campos, head of the Chilean Army Intelligence School, also shooting his driver, 42-year-old Sergeant Mario Espinoza Navarro. On 30 August 1983, MIR guerrillas assassinated 57-year-old Major-General Carol Urzúa Ibáñez, military governor of Santiago and his armed escorts, 30-year-old corporal Carlos Rivero Bequiarelli and 34-year-old Corporal José Domingo Aguayo-Franco. During October and November 1983, the MIR bombed four offices of U.S. affiliated corporations. In June 1988, the MIR bombed four banks in Santiago, causing serious structural damage.