María Soledad Iparraguirre

María Soledad Iparraguirre Guenechea (born Eskoriatza, 25 April 1961), known as "Marisol" until 1994 and "Anboto" When Iparraguirre was 20, police raided her family home and found of dynamite brought from France. During the operation her boyfriend José Manuel Aristimuño, alias "Pana", was killed, while her father fled to France. At the time, she was studying to become a teacher. Active alongside José Javier Arizcuren, Juan Carlos Arruti, and Eusebio Arzalluz, in the three years to 1987 she is believed by the police to have been involved in six killings in the Basque country, of postman Estanislao Galíndez, civil guardsman Fernando Amo, and police officers Félix Gallego, Manuel Fuentes, Antonio Ligero, and Rafael Mircientes. At the same time her lover was in charge of the political wing. She was accused of being responsible for the collection of ETA's "revolutionary tax", used to fund the group. At the time of her arrest, Iparraguirre was wanted by Spanish police for her involvement in at least 14 killings.

In April 2012, the ETA prisoners' association EPPK, endorsing a peaceful negotiated settlement to the Basque conflict, nominated Iparraguirrea, together with her partner Antza, as two of the six prisoners delegated to represent the organization in any future negotiations which might possibly take place between ETA and the governments of Spain and France.