▁of ▁gun men ▁on ▁motor b ikes ▁and ▁a ▁car ▁forced ▁the ▁car ▁off ▁the ▁road ▁where ▁it ▁crash ed ▁into ▁a ▁station ary ▁vehicle . ▁The ▁gun men ▁opened ▁fire ▁and ▁dalla ▁Chiesa ▁was ▁killed ▁along ▁with ▁his ▁wife ▁and ▁their ▁esc ort ▁agent , ▁D omen ico ▁Rus so . ▁ ▁The ▁lead ▁k iller ▁was ▁P ino ▁Gre co , ▁who ▁was ▁later ▁conv icted ▁in ▁absent ia ▁of ▁the ▁crime ▁at ▁the ▁Max i ▁Tri al . ▁A ▁number ▁of ▁other ▁gun men ▁were ▁involved , ▁including ▁Giuseppe ▁Luc ch ese , ▁who ▁was ▁also ▁sent enced ▁to ▁life ▁imprison ment ▁for ▁the ▁crime ▁at ▁the ▁Max i ▁Tri al . ▁Bern ardo ▁Pro ven z ano , ▁Salv atore ▁Ri ina , ▁Giuseppe ▁Cal ò , ▁Bern ardo ▁Br us ca , ▁Francesco ▁Mad onia , ▁N en è ▁G era ci ▁and ▁Francesco ▁Sp ad aro ▁were ▁later ▁also ▁sent enced ▁to ▁life ▁imprison ment ▁in ▁absent ia . ▁ ▁Dal la ▁Chiesa ▁was ▁also ▁investig ating ▁the ▁death ▁of ▁Mau ro ▁De ▁Mau ro , ▁a ▁journalist ▁who ▁had ▁himself ▁been ▁investig ating ▁the ▁murder ▁of ▁En rico ▁Mat tei , ▁head ▁of ▁Ag ip , ▁the ▁Italian ▁oil ▁company . ▁ ▁In ▁the ▁for ew ord ▁of ▁the ▁Argent ine ▁National ▁Commission ▁on ▁the ▁Dis app earance ▁of ▁Pers ons ▁report ▁on ▁the ▁Argent ine ▁D irty ▁War , ▁dalla ▁Chiesa ▁was ▁c ited ▁as ▁having ▁rejected ▁the ▁use ▁of ▁tort ure ▁in ▁Italy ▁in