▁time ▁of ▁Er sh ov ' s ▁arrest , ▁in ▁accord ance ▁to ▁the ▁three ▁mur ders , ▁innoc ent ▁people ▁were ▁already ▁conv icted ." ▁ ▁Tri al ▁and ▁sentence ▁ ▁Initial ly , ▁Er sh ov ▁refused ▁to ▁give ▁evidence , ▁called ▁himself ▁with ▁a ▁false ▁name ▁and ▁claimed ▁to ▁be ▁a ▁tr amp .   L ater , ▁while ▁conf ess ing ▁to ▁law ▁enfor cement ▁officials , ▁he ▁pointed ▁to ▁his ▁real ▁residence ▁where ▁ir ref utable ▁evidence ▁was ▁found ▁- ▁the ▁tools ▁of ▁the ▁crime ▁( two ▁kn ives ▁that ▁he ▁called ▁" fe athers "), ▁as ▁well ▁as ▁the ▁belong ings ▁of ▁the ▁vict ims ▁( old ▁jack et ▁and ▁a ▁worn ▁coat ) ▁and ▁their ▁pass ports .   An ▁important ▁clue ▁against ▁Er sh ov ▁was ▁his ▁di ary ▁of ▁seven ▁columns , ▁in ▁which ▁he ▁wrote ▁down ▁all ▁his ▁attacks ▁in ▁detail : ▁the ▁first ▁column ▁- ▁the ▁number ▁of ▁the ▁victim , ▁the ▁second ▁- ▁the ▁time ▁of ▁year , ▁the ▁third ▁- ▁the ▁instrument ▁of ▁the ▁crime ▁( cap ital ▁" P " ▁- ▁committed ▁with ▁a ▁kn ife ; ▁capital ▁" N " ▁- ▁committed ▁with ▁a ▁table ▁kn ife ; ▁" p " ▁- ▁crime ▁committed ▁by ▁hands ▁or ▁with ▁a ▁stick ), ▁the ▁fourth ▁- ▁the ▁nature ▁of ▁the ▁injury ▁(" p " ▁- ▁w ound , ▁" t " ▁- ▁cor pse ), ▁the ▁fifth ▁- ▁sex ▁of ▁the ▁victim , ▁the ▁sixth ▁- ▁the ▁crime ▁scene ▁and