<□>Investigat□rs learned that □he group had been□friends fo□ y□ars, but rece□tl□ there had□been tension am□ng□them.□R□m□rs □f□d□sagreemen□s□and arguments during the trip beg□n to surface□ lead□n□ autho□iti□s □□ sp□c□late wh□ther □ou□ p□ay was inv□□ve□.□Each m□□□er □f the□□r□up□had□a differe□t story□to tell□ and the inc□nsistencies□in□their accounts□onl□ ad□ed to the mystery of□the missing nine.