NEW : Josh Powell kids had chop wounds , autopsy shows . Powell and his sons died of carbon monoxide poisoning . Powell sent goodbye e-mails to his pastor , others About two minutes later before the fire . A Puyallup police chief vows to keep on the case of Powell disappearance .
NEW : Powell kids had chop wounds , autopsy shows . Josh Powell and his sons died of carbon monoxide poisoning . Powell sent goodbye e-mails to his pastor , others just minutes before the fire . A Utah police chief vows to keep on the case of Susan Cox-Powell 's disappearance .