At a few minutes after 7.30 a.m., the town of Estella, Navarre was rocked by a huge explosion. Several Civil Guard officers went to the crossroads of Paseo de la Inmaculada and Avenida de Yerri, where they found a vehicle on fire. The only piece left intact was the registration plate, from which they realised that the two charred bodies inside were those of their fellow officers, traffic police José Ferri Pérez and Antonio Fernández Álvarez. Terrorists from ETA had detonated a car bomb containing 25 kilograms of ammonal and 40 kilograms of shrapnel as the civil guards, who were on their way to begin traffic duty, were passing.
José Ferri was originally from Ibi (Valencia). He was married with three young children and was planning to apply for a transfer to his home town.