 He and other policemen were indicted in 1964 for obstruction of justice in the murders of numerous Prieto gang members.Following Prieto's death in 1965 in a local jail, however, Almirón and his co-defendants were acquitted.Almirón was involved in the June 1964 death of a U.S. military officer, who was fatally shot during an altercation with the police officer outside a dance hall in Olivos, an upscale suburb of Buenos Aires.