As a result of this ban, Argala and Wilson were forced to relocate to Madrid. They obtained information about Luis Carrero Blanco, planning to kidnap him in exchange for the freedom of all imprisoned Basque activists. More militants joined them in Madrid and by May 1973 plans were complete to carry out the kidnapping. Due to various problems, the kidnapping was delayed. Later on the ETA member Eustakio Mendizabal, aka "Txikia", was killed in Algorta, forcing the organization's directorate to delay the abduction. From that moment on, the Madrid group was called the "Commando Txikia". Carrero Blanco was appointed prime minister of the Spanish government and undertook more security measures. With the difficulties in kidnapping Carrero Blanco Argala's group tried to kidnap the Secretary of Trade Alberto Ullastres, but he was away when a cell formed by ETA members came up in his house on 7 November.