<□>I□vestigat□rs□□earned that the group had been□friends f□r years,□but □e□□n□ly th□re had b□en tensio□ □mong□them. Rumors of disagreements and □rguments dur□n□ the trip□began □o sur□ac□□ leading authorit□es to□s□□culate□wh□ther □oul □lay□wa□ involved. □□ch □embe□□of the group ha□□□ differ□nt s□□ry to tell, □nd the i□cons□stencies in their accoun□s □□ly added to □he my□ter□ o□ the mis□i□g nine□□>