18 June 1976,
In Etxarri Aranatz five people were killed by a bomb abandoned by Spanish military. Second Maiza, Gloria Pejenaute, Saturnino Luis Erdozia and the younger José Luis Tabar and Jesús Miguel Zeberio. In the Sierra de Urbasa, one of them took the bomb left by the military as junk. At first the authorities said it was a butane accident, but finding more explosives left by the military in the mountains ruled out this hypothesis.