Larrañaga's counsels Felicitas Aquino Arroyo and Sandra Marie Olaso Coronel urged the high court to admit the "amicus curiae" from the Basque Bar Council (BBC), Barcelona Bar Associations (BBA) and Bar Association of Madrid. The three organizations expressed their interests in the case of Larrañaga since he was a "Spanish citizen with origins in the Basque Country, and therefore a member of the European Union." The BBA mentioned that the execution of a Spanish citizen would be in breach of the violation of the principle of reciprocity in international law, noting that if a Filipino citizen is found guilty in Spain, no Spanish court would have imposed the death penalty, nor would have allowed him extradited to any country imposing capital punishment. Former Ambassador Sedfrey Ordóñez claims he is the victim of a mistrial.