PITKIN COUNTY, Colo. (CBS4) – The Pitkin County Coroner’s office identified two suspected lightning strike victims as 41-year-old Jeffery Beard and 14-year-old Cameron Beard.

The two were from Colorado Springs and died on July 16 near Aspen.

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The coroner’s office investigated the deaths and determined the cause of death for both to be carbon monoxide poisoning. Officials said it happened by the use of a camp stove within the enclosed space of a tent.

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Though a lightning strike to the campers’ tent was originally thought to be the cause, the sheriff’s office said there was evidence to suggest carbon monoxide poisoning as a possible cause of death, as well as lightning.

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Autopsies revealed physical evidence of carbon monoxide, and both bodies had burns.