Eduardo Luis Duhalde, Argentina's human-rights secretary and a prominent voice in denouncing abuses during the country's military dictatorship in the 1970s and 80s, died Tuesday in Buenos Aires.
He had undergone surgery in February for an aortic aneurysm, and in recent days had suffered complications.
Mr. Duhalde had been the country's human-rights secretary since 2003, when he was appointed by the late President Nestor Kirchner.
At the start of the military dictatorship that lasted from 1976 to 1983, Argentina's authorities ordered Mr. Duhalde's capture and he went into exile in Spain. While in Spain, he was outspoken in raising criticisms of repression under the dictatorship in Argentina.