Investigatorslea□nedtha□thegro□p□ad□eenfriendsforyear□,butrece□tlyt□erehadbee□tensiona□ongth□□.R□morso□disagree□entsandargume□□sdu□ingt□etripbeganto□urface,leadingau□horiti□st□speculatewhethe□foulpla□wasinvolved.□achmem□e□o□thegrouphadadiff□ren□s□□rytotell,an□th□inconsiste□ciesi□theira□countsonly□ddedto□hemysteryoft□em□ssingnine. □nvest□□atorslearnedthat□hegrouphadb□□nfr□□ndsfor□□a□s□b□tre□ent□ytherehadbeentensionamongt□em.R□mors□fdisa□ree□entsandargume□tsduringthetripbegant□□urfac□,□eadingauthoritiestospec□latewhetherfou□□□ayw□sinvolved.Eachme□berofthegrouphadad□ffe□e□ts□oryt□tel□,□ndtheinconsist□nc□□□in□□eir□□countsonlyaddedtothemys□eryofthemissingnine. <□>In□est□gat□r□le□rnedthatt□eg□□up□□dbe□nfr□endsfor□ears,butrece□□□ytherehadbe□ntensionamongthem.Rumorsofdisagreem□ntsandargumentsduri□gthetri□begantosurface,leadingau□□or□tiest□specula□ewhethe□foulplayw□sinv□lv□□.□ach□emberof□hegrouphadadi□□erentst□rytotell,andth□incon□is□enciesintheiracco□ntsonlyadde□t□themys□eryofthemissin□nin□. I□vesti□ato□slea□nedthat□hegroupha□beenfriendsfor□□ars,butr□cently□her□hadbee□tensionamo□□them.□umors□fdisagree□entsa□d□rgu□□n□sd□□ing□h□tripbegantosur□a□□□lead□ng□uthoritie□□ospeculatewhet□er□oulplay□□sinvolved.Ea□hmemb□ro□th□g□□uphad□d□fferents□orytot□l□□andthei□con□ist□nciesi□theirac□ount□on□yaddedtothemysteryof□hemi□singnine.□>