<□>In□e□tigators learned□that the group had □een friends for y□ars, □ut □e□ently there□had been tension am□ng the□□ Rum□rs□of disa□reements and argument□ durin□ t□e trip be□an to □ur□ac□,□□ea□ing authoriti□s to spe□ul□te□whet□er foul □lay was□□nvo□ved. Each member of t□e g□□up □□d a di□feren□□s□ory to□tell□ a□d t□e inco□sistencies i□ their□a□□□unts o□ly adde□ t□ the□my□t□r□ □f the mis□in□ nine.□/p>