The Asheville Citizen-Times reported Saturday the autopsies of James Patrick Landreth and Jacob Bruton Galloway list the cause of death as "fentanyl, heroin, cocaine and ethanol toxicity."
The North Carolina men were visiting the area for a rugby tournament and had celebrated their victory June 8. They were found dead the next day by another person staying in the room at the Ashville Best Western.
A search warrant said police found no indication of drug use or foul play.
Police initially believed carbon monoxide poisoning may have caused the two deaths. But three tests by the city's fire department found no elevated levels in the room.
Information from: The Asheville Citizen-Times, http://www.citizen-times.com
Copyright 2019 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.