Investigators rule out carbon monoxide poisoning in mysterious deaths of three people in SW OKC

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Oklahoma City police are investigating three suspicious deaths.

Police responded to a call at 8:56 a.m Saturday, after three people were found unconscious at 8712 SW 36. The 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. Police aren’t releasing the victims’ names at this point.

The medical examiner will determine the cause and manner of death.

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