forensic anthropologist at the university of tennessee, was asked for his opinion. >> we have three fractures irradiating out from the same source, the source being the hole that is in the skull. that is an indication that there's been blunt-force trama there that's not due to the fire. >> the cause of death was determined to be thermal injuries and blunt-force head trauma. his death was listed as a homicide. homicide investigator major michael overbey asked jean long to explain what happened on the night of the fire. jean said her husband was filling the heater with kerosene when it exploded. >> you said that he re-lit it inside. >> well, he didn't relight it, he was refueling it. he had to put fuel in it. >> with what? >> kerosene. >> with what container? >> it was red.