 According to Blythe 's attorney Martin <unk> , the police launched an investigation following the death of <unk> , about a month after the concert and following a coma . After interviewing several <unk> from the concert , the police asked the United States Department of Justice to take part in the investigation ; however , they refused to cooperate and , <unk> , did not notify anyone from Lamb of God or its management . 
