Three months after a trio of Kansas City Chiefs fans were found frozen to death in a friend's backyard, their families are still pleading for answers from investigators.

The bodies of Clayton McGeeney, 36; David Harrington, 37; and Ricky Johnson, 38, were discovered at their friend Jordan Willis' Kansas City home, two days after they gathered to watch the Chiefs' final regular season game Jan. 7.

A toxicology report indicated the friends had several substances, including cocaine and fentanyl, in their systems, when they died, according to WDAF-TV. Police ruled out foul play early on, but still many questions remain unresolved, including the men's exact causes of death.

"If there was a person that knew what was in whatever was consumed that night, and didn't warn anybody, they should be held accountable," Harrington's mom Jennifer Marquez told the station. "And that's my fear, it won't happen."

Marquez alleges authorities have not been receptive as the investigation drags on.

"It's so hard not knowing anything – like not hearing anything." Marquez said. "We need to know something is going on – we need updates – we need to be told this is not a dead case."

"It's not easy and any parent that's gone through this knows what I'm talking about. It's hard – very hard." she continued.

A fifth man who was the last person to see the friends alive retained a lawyer who has been in contact with the Platte County Prosecutor's Office, the outlet reported.

No arrests have been made.