On 19 June 1987, a car bomb exploded in the underground car park of a Hipercor supermarket in Barcelona, killing 21 civilians and injuring 45, amongst them several small children. Santiago Arrospide, also known as Santi Potros, and Rafael Caride Simon were sentenced to 790 years in prison for their role in the attack. Both Arrospide and Simon were members of the Basque separatist group ETA.