Before committing the crime for which he would become infamous in Spain, Arcan already had nine police records: six for burglary, two for injuries and one for infringing on immigration law.
His expulsion from the country was processed several times, but never completed because several courts wanted him to fulfill his responsibility for the different causes that he had open.
[2] As proven at trial, at the dawn of day on June 20, 2001, at about 4 PM, Arcan entered through a door on the top floor in the house inhabited by the Castillo family in Pozuelo de Alarcón, with the purpose of robbery.
Arcan entered the room, and without turning on the light, fired at the lawyer Arturo Castillo López and his wife.
Arcan then violated the youngest of the girls and assaulted the eldest with a machete; while the mother, who had regained consciousness, was asking for help by telephone from the emergency services.