□ Inve□tigator□ □earned that the group□had b□en f□iends □or y□□rs, but recent□y there □ad bee□ t□□sion am□ng □hem.□R□mors of disagre□□ents and arg□m□□ts d□rin□ the□trip beg□n to □urface, leading authorities to s□eculate whether □□ul play □as in□olved. Ea□h member of □he gr□u□□ha□□□ different story to tell, a□d t□e incon□istencies in□their a□coun□s onl□ added to □he mystery of□t□e m□□□ing nin□.