Siskiyou County officials are investigating the deaths of two people found in a home in the Mount Shasta Vista Area. The cause of death was likely carbon monoxide poisoning, as a heater was found in the room connected to a 20 pound propane tank. An autopsy will be done Wednesday on the two, identified as 66-year-old Chengfang Su and 66-year-old Yangmel Wang, both of Sacramento. The discovery was made Monday night by a family member.