Keillers Park murder
They were named as Jon Nödtveidt ( aged 22 ) , the leader of black metal band Dissection , and his friend Vlad ( aged 20 ) , an Iranian national settled in Sweden . 
<triplet> Jon Nödtveidt <subj> black metal <obj> genre <subj> Dissection <obj> member of <triplet> Dissection <subj> Jon Nödtveidt <obj> has part <subj> black metal <obj> genre