Authorities are investigating whether carbon monoxide poisoning caused the deaths of two people whose bodies were found inside the cab of an idling 18-wheeler.
The partially clothed bodies of a man and woman were found Wednesday at a San Antonio truck stop. Neighboring truckers had noticed a foul smell coming from the truck.
Investigators say the bodies were decomposed to the point that they couldn't immediately determine a cause of death. An autopsy is planned for today.
San Antonio police Sergeant Tom White says there was no sign of foul play, a struggle or trauma to the bodies. The doors of the cab were locked.
The woman, who has not been identified, was found lying in the bed. The man's body was slumped over the bed. Police say he was a resident of San Antonio but have not released his identity.
Witnesses say the truck had been idling at least since Saturday.
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