View a timeline of the investigation into Kansas City Chiefs fans’ deaths.

(NewsNation) — Police in Kansas City have received the toxicology report in the deaths of three men in Kansas City, and according to family sources, the men had drugs in their systems including cocaine and fentanyl.

Family members of David Harrington, Clayton McGeeney and Ricky Johnson told NewsNation affiliate WDAF they learned that police received the report, and Kansas City police confirmed they have been in contact with family.

“There have been no additional details of this case revealed to any media, nor are there any plans to at this time. The case remains an ongoing death investigation,” a Kansas City Police Department spokesperson said Thursday.

Tony Kagay, the attorney for the family of McGeeney, says the report is “just the first step” in finding out what happened to the three men. Kagay prefaced his comments by saying he has not personally seen the report, which has not yet been officially released by police.

“I don’t think that anyone familiar with this situation or this investigation thought that there wasn’t something else in play here and I think that the toxicology report is going to be the first step on many steps in the investigation as to who is responsible for these men’s tragic deaths,” Kagay said Thursday night on “CUOMO.”

Police from the outset said they do not suspect foul play in the deaths and that it is not a homicide investigation.

Since then, the families have questioned the initial steps police took and their relative silence in the weeks since the bodies were found Jan. 9. The three men had gathered with other friends two nights prior to watch a Kansas City Chiefs football game and are believed to have been last seen alive by Jordan Willis.

Willis is the man who lived at the home where the three bodies were found. He has since moved out and reportedly checked into rehab.

Willis’ attorney John Picerno previously told NewsNation his client “did nothing wrong” and had no idea his friends were lying dead in his backyard. According to Picerno, Willis saw his friends leave his house before falling asleep that night.

“If fentanyl was involved, which I don’t know at this point, then obviously … it’s a scourge, and it turns recreational drug use into a lethal situation,” Kagay said.

Autopsies are still pending to determine the cause of death. That could take several more weeks, according to the medical examiner.

Linda Johnson, the stepmom of Ricky Johnson, told NewsNation she and her husband were told by authorities the bodies had to “thaw out first” when they asked if they could go to identify their son.

WDAF learned the three men were still alive in the wee hours of Jan. 8, maybe as early as 1:30 a.m. It wasn’t until late in the evening Jan. 9 that McGeeney’s fiancée went looking for him, eventually broke into the home and found a body.

When police arrived, Willis opened the door and officers found the other two bodies. His attorney issued a statement saying Willis had no idea his friends were dead outside.

If the toxicology report shows drugs were in the men’s systems, former FBI agent Jennifer Coffindaffer said police will likely next try to find out who supplied the drugs.

“I really believe that this has to do with the chocolate chip cookie effect, which is basically this little amount of fentanyl that are scattered throughout the drug, are you going to get a chocolate chip or are you not?” Coffindaffer said on “CUOMO.” “If you get that chocolate chip of that fentanyl, that is when you die.”