▁unit ▁of ▁the ▁DE A ▁to ▁coordinate ▁the ▁investigation ▁in ▁Mexico . ▁In ▁the ▁investigation , ▁Mexican ▁government ▁officials ▁were ▁imp licated , ▁including ▁Manuel ▁I bar ra ▁Herr era , ▁past ▁director ▁of ▁Mexican ▁Federal ▁Jud icial ▁Police , ▁and ▁Miguel ▁Ald ana ▁I bar ra , ▁the ▁former ▁director ▁of ▁Inter pol ▁in ▁Mexico . ▁D rug ▁tra ff ick ing ▁as ▁an ▁issue ▁has ▁continued ▁in ▁Mexico ▁in ▁succeed ing ▁president ial ▁administr ations . ▁ ▁Foreign ▁policy ▁ ▁In ▁ 1 9 8 3 , ▁the ▁Cont adora ▁Group ▁was ▁launched ▁by ▁Colombia , ▁Pan ama , ▁Venezuela ▁and ▁Mexico ▁to ▁promote ▁peace ▁in ▁Latin ▁America ▁and ▁to ▁deal ▁with ▁the ▁armed ▁conflicts ▁in ▁El ▁Salvador , ▁Nic ar agua , ▁and ▁Gu atem ala . ▁ ▁During ▁De ▁la ▁Madrid ' s ▁administration , ▁Mexico ▁purs ued ▁closer ▁relations ▁with ▁the ▁United ▁States , ▁supporting ▁some ▁of ▁its ▁foreign ▁policy ▁object ives . ▁ ▁On ▁March ▁ 3 1 , ▁ 1 9 8 6 , ▁the ▁Mex icana ▁Fl ight ▁ 9 4 0 ▁crash ed ▁in ▁the ▁state ▁of ▁Mich o ac án , ▁killing ▁everyone ▁on ▁board . ▁Initial ly , ▁two ▁Middle ▁Eastern ▁terror ist ▁groups ▁claimed ▁responsibility ▁for ▁this ▁crash , ▁along ▁with ▁the ▁bomb ing ▁of ▁T WA ▁Fl ight ▁ 8 4 0 , ▁which ▁occurred ▁just ▁two ▁days ▁later . ▁An ▁anonymous ▁letter ▁signed ▁by ▁those ▁groups ▁claimed ▁that ▁a ▁suic ide ▁mission ▁had ▁sab ot aged ▁the ▁plane ▁in