The assassination of was a mass shooting attack by the Basque separatist group ETA which took place on 4 October 1976 in San Sebastián in the Basque Country in northern Spain. Three ETA members carrying pistols and submachine guns killed Araluce, the Government appointed President of the Provincial Deputation of Gipuzkoa and member of the Council of the Realm. Araluce's driver was killed in the attack together with three police guards. Ten bystanders were also injured in the attack, which was ETA's deadliest of 1976.