▁minutes ▁later ▁by ▁the ▁R itz ▁bomb ing . ▁Police ▁moved ▁to ▁se al ▁off ▁the ▁surrounding ▁area . ▁At ▁no on ▁local ▁time , ▁an ▁un expl oded ▁bomb ▁was ▁found ▁in ▁room ▁ 1 8 0 8 ▁of ▁the ▁Mar ri ott , ▁together ▁with ▁bomb - making ▁equipment . ▁ ▁The ▁R itz - Car l ton ▁explos ion ▁is ▁thought ▁to ▁have ▁origin ated ▁in ▁the ▁Air lang ga ▁R estaur ant ▁on ▁the ▁second ▁story , ▁where ▁people ▁were ▁e ating ▁breakfast . ▁There ▁was ▁said ▁to ▁be ▁glass ▁everywhere . ▁A ▁part ▁of ▁the ▁fac ade ▁of ▁the ▁R itz ▁Carl ton ▁was ▁blow n ▁away ▁by ▁the ▁bl ast ▁and ▁windows ▁had ▁been ▁blow n ▁out . ▁ ▁The ▁Mar ri ott ▁bomb ing ▁occurred ▁during ▁one ▁of ▁a ▁series ▁of ▁periodic ▁breakfast ▁meet ings ▁of ▁CE Os ▁and ▁other ▁prominent ▁( and ▁pre domin antly ▁exp atri ate ) ▁members ▁of ▁the ▁Jak arta ▁business ▁community ▁hosted ▁by ▁James ▁Castle , ▁president ▁of ▁Am Ch am ▁Indones ia , ▁a ▁branch ▁of ▁the ▁United ▁States ▁Chamber ▁of ▁Com merce ▁in ▁Jak arta . ▁The ▁Mar ri ott ▁bomb ▁was ▁det on ated ▁in ▁a ▁small ▁breakfast ▁room ▁r ented ▁for ▁the ▁event , ▁and ▁not ▁in ▁the ▁main ▁restaurant . ▁One ▁witness ▁said ▁the ▁lo bb y ▁of ▁the ▁neighbor ing ▁Pla za ▁M uti ara ▁building ▁was ▁destroyed ▁in ▁the ▁explos ion . ▁ ▁The ▁un expl oded ▁bomb ▁in ▁room ▁ 1 8