OKLAHOMA CITY - Officials have identified the three people who mysteriously died in southwest Oklahoma City over the weekend.
The 911 call came when a man getting ready for work got concerned when no one else in the home was getting up.
Two people were pronounced dead at the scene and one in critical condition was pronounced dead at Integris Baptist Medical Center, police said.
A total of four people were involved. Only the man who called 911 made it out alive.
“He starts to check on his family members, and that’s when he realized something was terribly wrong when he couldn’t awaken anyone in the house,” said Oklahoma City Fire Department District Chief Sean Cobb.
The only survivor told investigators their gas fireplace had been on all night.
“As soon as our crews got on scene, they immediately started opening the windows to ventilate the structure. Even though we don’t know at the time is or isn’t it CO, we want to make it a safe environment for our crews,” Cobb said.
But after hours of forensic work, this investigation turned in a new direction.
Oklahoma Natural Gas recreated the scene.
“When I arrived on the scene, I was the first unit on scene that had a CO monitor, so the first thing we did was go in, we check for CO. We did not get a reading,” Cobb said.
They shut all the windows, turned on the fireplace, and tested the carbon monoxide levels again.
ONG spokesperson Cherokee Ballard told NewsChannel 4 Saturday evening that crews did not find alarming levels of carbon monoxide.
Investigators said the case is ongoing.
On Tuesday, officials identified those who died in the home as Susan Hadley, Christie Schlund and Jeffrey Vaughn.
The medical examiner will determine the cause and manner of death.