The movement was built Creating around the separatist organization ETA , which had launched Bringing a campaign of attacks Attack against Spanish administrations since 1959 .

ETA had been proscribed Name_conferral as a terrorist Terrorism organization by the Spanish , British , French and American authorities at different moments .

The conflict Hostile_encounter took place Process_start mostly on Spanish soil , although to a smaller degree it was also present Presence in France , which was primarily used Using as a safe haven by ETA members .

`` Basque conflict Violence '' is preferred Choosing by Basque nationalist groups , including those opposed Preventing_or_letting to ETA violence Violence .

Its participants Participation included Cause_to_be_included politicians and political activists on both sides , the abertzale left ( Basque nationalist left ) and the Spanish government , and the security forces Military_operation of Spain and France fighting against ETA and other small organizations , usually involved Participation in the kale borroka ( Basque youth guerrilla violence Violence ) .

Far-right paramilitary groups fighting Hostile_encounter against ETA were also active in the 1970s and 1980s .

On 20 October 2011 , ETA announced Expressing_publicly a `` definitive cessation Process_end of its armed Bearing_arms activity '' .

Immediately after the bombing Use_firearm , leaders of the PP claimed evidence indicating the Basque separatist organization ETA ( Euskadi Ta Askatasuna ) was responsible for the bombings .

The targets were four members of ETA military , whom the Spanish government believed to be senior figures in the organisation , itself proscribed as a terrorist group in Spain and France .

All four people were killed Killing , with a fifth person , apparently unconnected to ETA , injured in the shooting .

On August 9 , the Basque nationalist and separatist organisation ETA claimed Statement responsibility for the attack Attack , while four other bombs exploded Attack around restaurants and shopping centres in Palma , Majorca , causing no injuries Bodily_harm .

The bombing Attack was ETA 's first attack Attack in Majorca since it tried to kill Killing King Juan Carlos I in the summer of 1995 , and its deadliest attack Attack since it killed Killing two Civil Guard officers in Capbreton , France in 2007 .

The attack Attack came Motion on the eve of the 50th anniversary of ETA 's founding Creating , and days before the King 's yearly visit to Majorca .