<□>Inves□i□ator□□□earned that th□ group □ad been fri□□d□ for□yea□s□ but re□ently there had been te□sion among them. Rumors □f□disagr□□ments an□ argumen□s dur□ng□the trip began to sur□ace, le□di□g □ut□or□t□es□to specu□at□ whether f□ul play was i□volve□. Ea□□ memb□r of th□ group had a □ifferen□□story to□tel□, and□t□e inconsistencies □n thei□ accounts □nly adde□ to the□mystery of the□missing nine.