In□estig□tors□lea□ned that□the group □ad□□e□n friend□ for years, b□t recen□ly there h□□ bee□ tensio□ amon□ th□m. Rum□rs□of disa□r□e□ents and arguments during the tr□p□began to sur□□c□□ leading a□thorities to spe□ulate whethe□ □oul□□lay w□s □n□□lved. E□ch member of t□□ group had□a dif□ere□t stor□ to tell, and t□□ incons□stenci□s i□□their ac□o□nts only add□d to the myst□ry of □he missi□g ni□e□