Chris Clarke at Pharyngula quotes a comment:
As an Argentinian I can confirm your “rumours” and add that this guy was a collaborator with the military during the last coup d’etat during the 70′s : Among many things, he informed to the military that two monks that were working in a low income neighbourhood were no longer protected by the catholic church, facilitating their detention and posterior disappearance.
Mind you, to “dissapear” at that time meant to be detained by the military, held without rights or trial, possibly (and often) tortured under suspicions of being a Marxist/ “terrorist”, being completely incomunicated with your family and finally be killed and buried on an unmarked grave, or thrown form a plane into the river.
From a fucking plane.
Into the river. (Known as “deathflights”: http://en.wikipedia.org/wiki/Death_flights )
Argentina maybe not such a great choice after all, eh?