<□>□nvesti□□t□rs learned that the g□oup had □een□f□iends fo□ ye□rs□ but recent□□ the□e had bee□□tens□on□a□o□g them. R□mors of disagree□en□s an□ argu□ents during the trip□b□gan □o □urface, leading auth□□ities to sp□cu□ate whether foul play w□s invol□ed. Ea□h membe□ o□ the group□had a different stor□ to tell, a□d th□□□nc□nsist□□□ie□ in their□acco□nts only □dd□d t□ th□ m□ster□ of the □□□□ing nin□.