▁killing . ▁Hol ro yd ▁also ▁told ▁the ▁Gard a ▁S í och á na ▁that ▁he ▁had ▁received ▁a ▁photograph ▁of ▁Green ▁some ▁months ▁prior ▁to ▁his ▁killing . ▁Hol ro yd ▁en larg ed ▁the ▁photograph ▁and ▁had ▁it ▁distributed . ▁He ▁believed ▁from ▁that ▁time ▁until ▁Green ' s ▁death , ▁ 4 ▁Field ▁Survey ▁Tro op , ▁one ▁of ▁the ▁three ▁sub - un its ▁of ▁the ▁ 1 4 th ▁Int elligence ▁Company ▁led ▁by ▁Capt ains ▁N ai rac ▁and ▁Tony ▁Ball , ▁had ▁Green ▁placed ▁under ▁surve ill ance .< ref > The ▁Bar ron ▁Report ▁( 2 0 0 3 ): ▁The ▁murder ▁of ▁John ▁Francis ▁Green . ▁p . 2 0 . ▁Retrieved ▁ 3 1 - 0 1 - 1 1 </ ref > ▁N ai rac ' s ▁claim ▁has ▁been ▁disc ount ed ▁by ▁two ▁Gard a ▁investig ations ▁which ▁revealed ▁that ▁the ▁polar oid ▁was ▁one ▁of ▁a ▁series ▁taken ▁of ▁Green ' s ▁body ▁by ▁a ▁Gard a ▁officer ▁the ▁morning ▁following ▁his ▁fatal ▁shooting . ▁ ▁Years ▁after ▁the ▁death ▁of ▁John ▁Francis ▁Green , ▁journalist ▁Peter ▁Taylor ▁conducted ▁an ▁interview ▁with ▁his ▁brother , ▁Leo , ▁who ▁had ▁been ▁a ▁key ▁figure ▁in ▁the ▁ 1 9 8 0 ▁hung er ▁strike ▁at ▁the ▁Maz e ▁Pr ison . ▁When ▁asked ▁about ▁John ▁Francis ' ▁kill ers , ▁Leo ▁told ▁Taylor ▁he ▁believed ▁they ▁had ▁been ▁" loy al ists ▁or ▁British ▁Army ▁or ▁a ▁combination ▁of