▁both ▁criminal ▁gang s ▁such ▁as ▁the ▁P uc cio ▁family ▁and ▁ro gue ▁elements ▁in ▁the ▁police ▁and ▁intelligence ▁services . ▁ ▁Mont on eros ▁and ▁David ▁Gra iver ▁The ▁Tri ple ▁A ' s ▁chief ▁nem esis ▁at ▁the ▁time , ▁the ▁far - left ▁terror ist ▁group ▁Mont on eros , ▁claimed ▁up ▁to ▁ 1 , 0 0 0 ▁lives ▁from ▁ 1 9 7 0 ▁until ▁their ▁elim ination ▁in ▁ 1 9 7 6 . ▁They ▁also ▁perpet r ated ▁a ▁number ▁of ▁high - profile ▁r ans om ▁kid n app ings , ▁not ably ▁that ▁of ▁Jorge ▁and ▁Juan ▁Born ▁in ▁September ▁ 1 9 7 4 . ▁The ▁Born ▁brothers , ▁direct ors ▁of ▁what ▁was ▁then ▁one ▁of ▁Argentina ' s ▁largest ▁con gl omer ates ▁( B unge ▁y ▁Born ) ▁paid ▁US $ 6 0 ▁million ▁for ▁their ▁release ▁in ▁June ▁ 1 9 7 5 , ▁a ▁world ▁record ▁at ▁the ▁time . ▁At ▁least ▁US $ 1 4 ▁million ▁of ▁these ▁proceed s ▁were ▁la under ed ▁by ▁David ▁Gra iver , ▁a ▁real - est ate ▁developer . ▁Gra iver ▁fled ▁Argentina ▁in ▁ 1 9 7 5 ▁and ▁settled ▁in ▁Manh attan , ▁from ▁where ▁he ▁bought ▁cont rolling ▁st ake ▁in ▁a ▁variety ▁of ▁banks ▁in ▁the ▁U . S . ▁and ▁elsewhere . ▁He ▁reported ly ▁died ▁in ▁a ▁plane ▁crash ▁near ▁A cap ul co ▁in ▁August ▁ 1 9 7 6 , ▁however