I□□estigato□s learned tha□ the group □ad been friends □or years, but rec□n□ly□there□ha□ been□tension□among them.□Rumors of di□a□reement□ and□arguments during□t□e trip began to□surf□ce□ □eading au□horities□to spe□ulate whether □oul play□was i□volved. E□ch□□□mber□of the □roup had a different story□to tell, and □he inc□n□iste□cies in their account□ only ad□□d to the my□tery of the missin□□n□ne□