Investigato□□ learned th□t th□ group □ad been fri□n□s □□r□years□ but re□ently ther□ had been □□nsi□n□□m□ng them. □□□ors□of disagr□ements and □□gum□nts d□rin□ the trip began to□su□f□ce, leadi□g autho□i□i□s to specula□e □□ethe□ foul pl□y was invol□ed. Each member of the □rou□ had □ d□fferen□ story□to □ell,□and t□e in□□ns□stenc□es□in □h□ir accounts onl□ add□d to the my□t□r□ o□ t□e missi□g □ine.□<□2□第3□:矛盾与分歧□□h2>