Alcides Diaz Gorgonio arrested in burglary of political candidate Sergio Massa's home in Argentina Argentina's President Cristina Fernandez, left, and her former Chief of Cabinet Sergio Massa whose home has been broken into by a navy spy. ARGENTINE investigators have arrested a navy intelligence agent suspected of burglarising the home of a leading opposition candidate for congress. Security camera videos released on Monday show Sergio Massa's home was robbed on July 20, allegedly by fellow Angentine Alcides Diaz Gorgonio. Mr Diaz works in the security ministry's intelligence unit under Sergio Berni, who answers to President Cristina Fernandez. Mr Diaz was detained hours later after local police found Mr Massa's portable USB device in his house. The video appears to show Mr Diaz firing a pistol into the security camera. Mr Massa used to be Ms Fernandez's Cabinet chief, but now he seems to be her biggest threat, leading an opposition slate that could end her control of congress.