Civil Guard Luis Miranda Blanco was killed by ETA on 5 July 1981. He was 28 years old, married and had two daughters, aged five and three. His wife was expecting their third child. The attack took place at half past six in the morning, when the Donosti unit of ETA opened fire on the official car in which Luis Miranda and his fellow civil guard José Paradero were travelling on the N-I national road in Lezo (Guipuzcoa). José Paradero was seriously wounded in the attack, but survived.
The terrorists had been waiting for the officers behind a wall about two meters high at Alto de Gainchurizqueta. When they saw the Civil Guard traffic patrol car appear, they shot at it and fled, despite the fact that a few metres behind was another unmarked Civil Guard vehicle, intended precisely to protect against possible attacks.