Initial toxicology reports on the three Kansas City Chiefs fans found frozen and dead in a friend’s yard found cocaine, THC — and three times the amount of fentanyl that is enough to kill, according to reports.

The families of the men who were found dead outside their friends home — confirmed to WDAF that police now had the initial reports on illicit drugs in the dead men’s systems.

“The family source says level 10 fentanyl is enough to kill.  The #KansasCity3 were at level 30.”

Drug use has been speculated as a contributing factor in the men’s deaths.  Willis, an HIV scientist, checked himself into rehab for substance abuse after his friends were found dead, his parents have said.

Police have stressed that the case is not being investigated as a homicide and that no foul play is suspected — however, some of the deceased men’s relatives believe Willis had a role to play in their deaths.

Kansas City Chiefs fan who hosted watch party where three friends froze to death checks into rehab