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Inve□tiga□ors □earn□d that the g□oup h□d been□fr□□n□□ for □ear□, but recent□y th□re □ad been tension□among□them. □umor□□of disag□□ements and□□rgume□ts□du□i□g the t□ip began to sur□ace, leadin□ au□hor□ties □o speculate whethe□ f□□l □lay□was involv□d.□Each member of the group had a diff□ren□ s□ory to □ell, and the inco□□isten□ies in □heir accounts only adde□ to the mystery □f the missing□n□n□.□□与挑战□