Investigat□rsle□□nedthattheg□o□phadbeenfriends□o□years,□utrec□ntlyt□ereha□beentension□□ong□hem.Rumorsofdi□a□reement□andargumentsduri□gthetrip□egantosurface,leadi□g□□th□ritiestos□□culatewhethe□foul□la□wasi□vol□ed□Each□□mberoft□□□r□□phadad□ffer□ntst□ryt□tell,a□dt□einc□nsiste□c□□sin□h□ir□ccount□□nlyadde□tothe□□ster□oft□e□issing□i□e□□/p> Inves□□gato□□lear□edthat□hegro□phad□□e□□riendsforyea□□,butrec□ntlytherehadbeen□□nsi□namongthem.Rumo□sofdi□ag□eementsandargume□tsd□r□ngthetripbegantosurface,leadingauthoriti□stospeculat□whet□erfoulplaywas□nvolved.Eachmember□ft□□gro□phadadifferentstorytotell,andtheinconsi□□e□c□esintheiraccountsonlyadde□tothemy□teryofthemi□sin□nin□. □nv□stigatorslea□□edthatthe□rouphadbeen□□□endsforye□rs,butrecentlyther□□a□beentensionamongthem.Rumorsofd□sagr□□me□tsanda□gumentsduri□gthetr□p□ega□tosu□□ace,leadinga□tho□□tiestospeculatew□etherfou□p□a□wasi□v□lve□.□achmem□□rofthegrouphadadifferen□□t□rytotel□,andthein□onsist□nciesint□ei□ac□□untsonlyaddedto□hemysteryo□themis□ingnine□ □nvestigators□earn□□thatth□grouphadbee□friendsforyears,bu□recentlythereh□d□eentensi□namongt□em.Rum□rsofdisagr□□mentsa□da□gum□ntsdu□ingthetripbe□antosurfa□e,le□□ingauthori□iestospecu□a□□wheth□r□oul□laywasin□olve□.□achmemberoft□egr□uphada□ifferent□t□ryto□e□l,a□dth□inconsis□□nciesint□eir□ccountsonly□ddedto□□emys□eryo□□h□mi□singnine.