according to an argentine official , the executions of sanchez , a low - respected security officer , and a judge last year were probable carried out by an israeli mercenary paid by the independiente cartel - the country ' s most powerful drug - trafficking mafia - , has set up paramilitary squads charge of thousand of individual murders and massacres against political and labor leader , as well as agricultural and patriot union rebel militants in many parts of the country .
Political and labor leaders were killed by patriotic union leftist militants.