Investigators have now identified four of the five victims in the weekend house fire in Bartlesville.
Bartlesville police say the victims are 18-year-old Destiny Jo Daugherty, 19-year-old Kevin Michael Lomax, 23-year-old Shelby Renea Sanders, and 38-year-old Jeremy Blair.
The fifth victim, as a 17-year-old male, has not yet been positively identified by the state medical examiner's office.
Captain Jay Hastings says preliminary autopsy reports show all five died of smoke inhalation.
The fire started around 5:00 a.m. Saturday morning.
Neighbors noticed the fire and called 911.
The cause of the fire is still under investigation.
The Oklahoma State Bureau of Investigation has been called to assist in the investigation and Hastings says the federal Bureau of Alcohol, Tobacco, Firearms and Explosives has offered its assistance.