I□v□stigatorslear□e□th□tthegro□phadbeenfriend□fory□ar□,butrecen□□yth□r□h□dbeenten□ionamongthem.Rumo□sofdisag□eementsandargumentsduringthetripbe□an□osurface,lead□ngauth□□□t□estospeculatewh□therfoulplaywas□nvolved.E□chmemberof□□egro□phadadiffere□□story□otell,andtheinco□□□st□□cie□int□eirac□o□nt□onlyaddedto□hem□steryoft□e□□ssin□□ine. Investigato□slear□□dthatth□grouph□dbe□nfrie□d□forye□rs,butrec□ntlyther□ha□b□en□ensionamo□gth□m.Rumorso□□is□greement□a□dargum□nts□uring□he□ri□b□ga□□□surface,leadi□gauthorities□osp□□ulatewh□therfou□pla□wa□involv□d.Eachmemberof□heg□□□phad□d□fferentstor□to□el□□andthei□con□isten□iesin□heiraccountsonlyaddedto□hemy□teryofthemi□s□ngnine. □nves□□g□torslearned□hatt□e□rouphadbeen□riendsfo□years,bu□re□□ntlytherehadbe□ntens□on□mo□g□hem.Rumorso□disagreementsa□dargument□duringthetr□pb□□a□tosu□face□l□a□□ng□u□hori□iest□specul□tewhe□her□□u□playwasinvolved.E□chmembero□th□grouph□dadiffere□ts□orytotell,andthe□nconsis□enciesin□heiraccountsonlya□dedtoth□my□teryofthe□issin□ni□□. Inve□tigatorslearnedth□t□hegrouphadbeenfri□ndsforyears,but□ecentlytherehadbeentension□□on□them.Rumorsofdisagreem□□tsandarg□mentsduringthetr□□beg□n□os□rface,le□din□author□tiestospecul□te□het□□r□oulpla□wasinvolved.□a□hmembero□the□ro□ph□dad□fferentstoryto□ell□a□dth□inconsist□nciesinthe□raccountson□yaddedtothemyster□ofthemis□ingnine.