A ranar 26 ga Mayu, 946, Leofa, ɓarawo ne da aka yi hijira, ya kashe Edmund, yayin da yake halartar Mass na St Augustine a Pucklechurch (South Gloucestershire). John na Worcester da William na Malmesbury sun kara da wasu cikakkun bayanai ta hanyar nuna cewa Edmund ya yi liyafa tare da manyansa, lokacin da ya ga Leofa a cikin taron. Ya kai hari ga mai kutse a cikin mutum, amma a cikin taron, Leofa ya kashe shi. Leofa ya kashe shi a wurin da waɗanda ke wurin. Wani labarin da aka yi kwanan nan ya sake nazarin mutuwar Edmund kuma ya watsar da tarihin baya-bayan nan a matsayin almara. Ya nuna cewa sarki ya kasance wanda aka kashe a siyasa. 'Yar'uwar Edmund Egyadth, matar Otto I, Sarkin Roma Mai Tsarki, ta mutu a farkon wannan shekarar, kamar yadda Anna Flodoard ta ruwaito.
26 ga watan Mayu 946