□nves□igatorslearnedthattheg□oup□adbeenfriendsforyear□,butrecentlyt□erehad□een□ensionam□ng□hem.R□mors□f□isagreementsandargumentsduringthetripb□gantosurface,□eadingauth□ri□i□st□s□eculatewhetherfoulpl□ywasinvolved.□achmembero□theg□o□phadadifferentstorytot□ll,a□d□heinconsis□enciesinthe□r□cc□u□□sonlyad□edt□themy□□eryo□them□ssingnine.□□□>□p>In□estigatorslearne□that□hegrou□hadbeenfriendsf□ryears,butrece□tlythere□adbee□tensio□amon□them□Rum□□sofdi□a□reementsandargumentsduri□gthetrip□□□antosurf□ce,leadin□aut□oritiestosp□c□latewhethe□foulpl□y□asi□v□l□ed.Eachm□mberofthe□ro□phad□differentstorytotell,andthei□□ons□stenciesintheiracc□□ntsonlyaddedt□themyst□□yofthemissingn□ne.□> Investigat□rslear□edtha□th□grouphad□□en□riendsforye□rs,butrec□□tlytherehadbeen□□nsionamongt□em.Rumorsof□isagreementsandargu□e□t□durin□t□et□ipb□gantosur□ace,leadin□□□thor□□iestospecula□□whet□e□foulplaywas□□volved□Eac□m□□be□oft□egrouphadad□ff□rentstorytotell,□ndthe□nc□nsisten□iesin□heirac□ou□t□only□ddedt□themys□er□ofthemissingnin□.