ass em lou ▁as ▁secretary - general ▁until ▁his ▁assass ination ▁on ▁ 1 7 ▁September ▁ 1 9 9 2 ▁in ▁the ▁My kon os ▁restaurant ▁in ▁Berlin , ▁Germany . ▁Abd ul lah ▁Gh ader i ▁Az ar ▁and ▁Abd ul ▁Rah man ▁Gh ass em lou ▁were ▁buried ▁on ▁July ▁ 2 0 ▁in ▁Paris ▁at ▁P ère ▁L ach a ise ▁C emetery . ▁ ▁Investig ation ▁According ▁to ▁P DK I ▁ ▁In ▁late ▁November ▁ 1 9 8 9 ▁the ▁Aust rian ▁courts ▁issued ▁a ▁war rant ▁for ▁the ▁arrest ▁of ▁the ▁three ▁Iran ian ▁represent atives ▁and ▁the ▁Aust rian ▁Government ▁express ly ▁accused ▁the ▁Iran ian ▁Government ▁as ▁having ▁inst ig ated ▁the ▁attack ▁on ▁Abd ul ▁Rah man ▁Gh ass em lou . ▁The ▁three ▁represent atives ▁of ▁Iran ' s ▁government ▁in ▁the ▁negoti ations ▁with ▁the ▁Kur d ish ▁leaders ▁returned ▁to ▁Iran ▁freely . ▁One ▁of ▁them ▁had ▁never ▁been ▁in ▁cust ody , ▁one ▁was ▁esc orted ▁by ▁Aust rian ▁police ▁to ▁the ▁Vienna ▁air port ▁nine ▁days ▁after ▁the ▁assass ination , ▁and ▁the ▁third , ▁after ▁one ▁night ▁of ▁the ▁arrest , ▁spent ▁a ▁few ▁months ▁in ▁the ▁Iran ian ▁emb ass y ▁in ▁Vienna ▁before ▁he ▁disappeared ▁from ▁Austria . ▁One ▁of ▁the ▁suspect s ▁was ▁Moh amed ▁Mag aby , ▁whom ▁the ▁Kur d ish ▁protest ers ▁in ▁Vienna ▁requested ▁to ▁be ▁arrested ▁and ▁be ▁put ▁under ▁travel ▁ban . ▁W arr ants ▁for ▁their ▁arrest