I□vestigato□slearn□d□hatthegrouphadbeenfriendsf□ry□ars,butrecen□lyth□□ehadbeentension□mong□hem.Rumorsofd□□agreementsandargumentsd□ringthet□i□begantosu□face,l□□dingauthorities□ospeculatewh□ther□□ul□lay□asin□□lved.Eachmemberofthegroupha□□differentst□rytote□l,□ndthei□consist□n□ie□inthe□raccounts□□lyaddedtothemyst□ryo□them□ssingnine. Investi□ato□slear□edthatthegr□uph□dbeenfriendsforyears□□□t□ec□□tlythereha□beent□nsionamongt□e□.Rumorso□disagree□en□san□a□gumentsduringthet□ipbe□□nt□su□fa□e,leadingauthoritiest□spe□ulatewh□therf□ulplaywasinvolv□□.Eachmembe□of□he□rouph□da□□fferents□□ry□o□ell,andt□□inconsist□nciesin□heiraccount□onlyaddedtothemysteryofth□missingnin□.