<□>Investiga□o□s learned tha□□□he gr□up had been friends □or □ears, but □e□□ntl□ there h□d been □□nsion a□□ng them. Rumo□s of□disagr□eme□ts and□□r□□□□□ts □ur□ng the trip beg□n to su□face, le□ding authoriti□s□to □p□□ula□e whether foul play wa□ invol□ed□ Each□me□be□ of th□□group□had□a di□ferent story to tell,□and t□e□inc□nsiste□ci□s in their accou□ts□only ad□ed to the mystery □f the mi□sing nine.