30 March 1977,
A pelotazo launched by the Spanish police in San Sebastian caused the death in the hospital of ANV militant Isidro Susperregi, 68 years old. On day 12, when he was attacked by the police, during the amnesty demonstration.
José Luis Aristizabal was killed two weeks earlier, even with rubber pelotazos. These two people were the first to die of this weapon in the Basque Country.