□p>Investigators l□arn□d th□t the□gro□p had be□n fr□ends fo□ ye□rs, but recent□y th□re ha□ been tens□on□amon□ □hem.□Rumors□□f disagreemen□s and□arguments durin□ the trip began t□ surfac□, leadi□g author□□ie□ □o s□eculate whether□foul□pla□ was □n□□lved. □□ch mem□e□□of the □rou□ had a di□ferent □to□y t□ tel□, and the□inco□siste□cies in their accounts only□added□to the□my□□ery□of the missing n□ne.□>