ed ▁by ▁Is ma ël ▁Tour é , ▁half - bro ther ▁of ▁S ék ou ▁Tour é ▁and ▁minister ▁of ▁the ▁Econom y . ▁Some ▁prisoners ▁were ▁placed ▁on ▁the ▁" black ▁di et ", ▁meaning ▁no ▁food ▁or ▁water ▁until ▁they ▁died . ▁ ▁Pr ison ers ▁could ▁only ▁show ▁their ▁courage ▁by ▁ref using ▁to ▁conf ess ▁during ▁tort ure ▁sessions , ▁and ▁ref using ▁to ▁beg ▁for ▁food ▁when ▁placed ▁on ▁the ▁black ▁di et . ▁L off o ▁Cam ara , ▁former ▁Secretary ▁of ▁State ▁for ▁Social ▁Affairs , ▁was ▁h anged ▁on ▁ 2 5 ▁January ▁ 1 9 7 1 , ▁the ▁only ▁woman ▁killed ▁at ▁that ▁time . ▁According ▁to ▁El ▁Had j ▁I bra h ima ▁D iane , ▁an ▁in mate ▁for ▁many ▁years , ▁from ▁June ▁ 1 9 7 2 ▁until ▁August ▁ 1 9 7 3 ▁at ▁least ▁four ▁corps es ▁were ▁taken ▁from ▁the ▁cells ▁each ▁day ▁and ▁thrown ▁into ▁mass ▁gra ves ▁in ▁the ▁rear ▁yard ▁of ▁the ▁prison . ▁ ▁In ▁ 1 9 7 5 , ▁France ▁agreed ▁to ▁restore ▁diplom atic ▁relations ▁after ▁French ▁prisoners ▁were ▁released ▁from ▁the ▁camp . ▁This ▁reduced ▁pressure ▁on ▁Tour é . ▁The ▁book ▁Pr ison ▁D ' A frique ▁by ▁Jean - Paul ▁Al ata , ▁a ▁surv iv or ▁from ▁the ▁camp , ▁was ▁b anned ▁from ▁publication ▁in ▁France ▁and ▁had ▁to ▁be ▁printed ▁in ▁Belg ium . ▁Further ▁in car cer ations ▁followed ▁in ▁the