Oscar Celerain, known as Peio, and Andoni Otegi Eraso, known as Iousu, were sentenced to 843 years in prison for the Aug. 4, 2002, bombing the Guardia Civil living quarters in Santa Pola. The 6-year-old daughter of one of the officers was killed in the explosion.
The two were members of the Basque separatist group ETA, which took responsibility for the blast, ThinkSPAIN reported Wednesday.
Celerain and Eraso have now been linked to two more bombings that took place shortly after the Aug. 4 incident.
An explosive device caused extensive structural damage to the Queen Burger restaurant in Torrevieja Aug. 9, 2002, ThinkSpain reported.
An anonymous tip led to the evacuation of the building so there were no injuries.
Three days later on Aug. 12, 2002, a suspicious package containing a bomb was found near the Elcano nightclub in Santa Pola. Police deactivated the package before it exploded.
ETA claimed responsibility for both devices.