the murders of galan , a low - ranking intelligence officer , and a judge last sunday , were undoubtedly laid out by an international mercenary trained by the medellin cartel - the city ' s most powerful drug - trafficking cartel - which has set up paramilitary lists accused of instances of individual murder and murders against religious and labor leaders , as well as nobles and patriotic union political militants in particular parts of the country .
Galan was killed by patriotic union leftist militants.