Dramatic photos of the last hours of three Kansas City Chiefs fans could solve the mystery of how they died, cops believe, as they seek to unlock the friends' cell phones

Detectives are combing through the cell phones of the three Kansas City Chiefs fans who were found dead in a backyard nearly 48 hours after a football watch party, DailyMail.com can exclusively reveal.

Relatives of the close friends have been asked for the codes to unlock the devices to see what photos were taken in their last hours and to see exactly who each of them called.

The father of 37-year-old victim David Harrington – who died along with Clayton McGeeney, 36, and Ricky Johnson, 38 – told DailyMail.com: 'I had a detective ask for my son's code because they couldn't unlock his phone.

Jon Harrington, 58, continued: 'They can access the call records but they wanted to see what else the phones contained.

'I know that they asked all the other families as well. In fact, I didn't know the code, so couldn't help.'

Families spoken to by DailyMail.com have said they cannot dismiss drugs as a possible cause of death of all three. 

David Harrington (second left), Clayton McGeeney (second right) and Ricky Johnson (right) are shown with two unidentified fellow Chiefs fans, neither of whom is believed to be involved in the mystery. Harrington, McGeeney and Johnson were found dead on January 9 in the backyard of another man's house 

DailyMail.com can also reveal detectives have not ruled out re-interviewing Jordan Willis, 38, (pictured with a relative) who hosted the party at his rental home where the pals gathered to see their team narrowly beat the Los Angeles Chargers on January 7.  He maintains that he had nothing to do with his friends' deaths

Loved ones of the dead men have raised questions over the lack of reporting of their bodies, and the snow that they say was not deep enough to cover them  

Clayton's uncle, Jim McGeeney, admitted: 'Because of their age group, I'd leave it in the picture.'

DailyMail.com can also reveal detectives have not ruled out re-interviewing Jordan Willis, 38, who hosted the party at his rental home where the pals gathered to see their team narrowly beat the Los Angeles Chargers on January 7. 

When asked if officers plan to speak to him again, a Kansas City Police Department spokesperson replied: 'That question would be part of the ongoing investigation.'

The department also confirmed that the deaths were not being treated a homicides – but evaded saying if they knew where Willis currently is.

The scientist has said he waved the trio off at 2am after the game and went to sleep on his couch.

He maintains he was oblivious to the fact that the outwardly healthy men in their 30s were laying outside for two days, until discovered at 10pm on January 9 – with 300lb-Harrington in the open porch and the others in the backyard.  

The victims' cars were outside his property the entire time.

He has also insisted he couldn't hear the victims' anxious loved ones banging on his door during this time as they wondered where they were, because he sleeps with headphones and keeps a fan on. 

Jon Harrington, the father of 37-year-old victim David Harrington told DailyMail.com investigators are now trying to gain access to the men's phones for clues 

The HIV research scientist has now vanished from the four-bedroom rental home in a quiet tree-lined road in the Northland district of Kansas City, Missouri.

Harrington's father Jon said of Willis's claim about not being able to hear relatives banging his door: 'I'm not buying all that c*** about the headphones.

'And I don't think it's very likely they froze to death like some people are saying, it just wasn't cold enough.

'There were four in the house just before 2am. Three are dead, he isn't. And to me, that's suspicious.'

Initial reports claimed the trio died due to freezing temperatures. But records show the temperature in Kansas City didn't drop below 32F degrees on January 7. 

It went up to 36F degrees on January 8 before dipping to a freezing point 32F degrees at night. 

January 9 was the coldest day with a bone-chilling 26F degrees by 2pm and 20 at 10pm.

Harrington's father also said he was largely in the dark over the investigation into the deaths, claiming police have given the grieving families little firm information. 

'There must be some kind of preliminary report from the autopsies and toxicology tests by now,' he said. 'But we've been told nothing.

'Everything I can put together is pure hypothesis. Police haven't told me a thing. I want to know what happened. It won't bring David back, but I want to know. I say to them, my son is dead – why?'

Asked if David was involved in drugs in any way, he conceded: 'It's possible. But that's not something he confided in me.'

Ricky Johnson, a father-of-three, was one of the three men found dead

Clayton McGeeney, 36, was also found dead in the backyard 

DailyMail.com broke it to the heartbroken father that it was his son who was discovered first – by McGeeney's desperate fiancée April Mahoney, 34, who broke into the property just before 10pm that Tuesday night.

April, who had been with McGeeney for 12 years, called police after finding Harrington. Officers then discovered the other victims in the backyard.

'I didn't even know that,' he said. 'Maybe David was trying to get back into the house. Maybe something had happened and that's why he was on the porch.'

Meanwhile the 'fifth man' on the fateful night, who DailyMail.com exclusively revealed as Alex Weamer-Lee, has also gone to ground – telling friends he doesn't want to be in the spotlight.

He has said through his criminal defense attorney that he arrived for the party at 7pm and left at midnight when everyone was alive and quiz show Jeopardy was on the TV following the game.

At his rental home in another part of the city on Sunday, a couple answered the door as the Chief's play-offs game against the Baltimore Ravens was about to start.

The man, dressed in a Chiefs jersey, said: 'Alex isn't here.' Asked when he would be returning, he replied: 'I don't know. He just wants this to be over.'

Willis has claimed to a family source that he is depressed over accusations he was involved in his friends' deaths and could not attend their funerals because of emotions running high and questions over the tragedy.

But Clayton's uncle Jim, a 70-year-old construction boss and key member of his tight-knit family, told DailyMail.com: 'This is just his mouthpiece saying, this poor guy.

'We're meant to think, that poor guy lost his friends. Well that poor guy should be fighting tooth and nail to find some answers rather than moving out of his house two days after the bodies were found.

'It's just a cover up to make people feel bad for him and get people off his case.'

Willis and the victims attended Park Hill High School, where he was a talented scientist. 

He went on to gain a PhD in chemical and physical biology from Vanderbilt University in 2014 after studying chemical and molecular biology at Northwest Missouri State University.

'Fifth man' Weamer-Lee – who shortens his name to Lee – was also at the school. He has a rap sheet including drugs offenses, we have previously disclosed.

DailyMail.com previously reveal that the 'fifth man' in the case of three Kansas City Chiefs fans found dead outside a rental home is Alex Weamer-Lee, pictured left with his mother Julia and brother Greg

Lee's social media contains many photos of him with Harrington, McGeeney and Johnson, including this picture where he can be seen in a living room with the latter two friends – all dressed in Chiefs gear in another apparent watch party 

'Fifth man' Lee (front left) has hired an attorney, Andrew Talge. The criminal defense lawyer said his client turned up at the house at 7pm and left at midnight when the four other men were watching Jeopardy

Flooring contractor Lee's social media contains many photos of him with Harrington, McGeeney and Johnson, including one where he's in a living room with the latter two friends – all dressed in Chiefs regalia in another apparent watch party.

His criminal record includes three drugs incidents in 2005 when he was 19 and lived close to his former high school.

He pleaded guilty to two charges of unlawful use of drug paraphernalia and one of possessing up to 35 grams of marijuana, according to records.

Lee was given 20 hours of community service for one of the drug paraphernalia charges, but failed to complete it. He was then sentenced to seven days in jail, record show.

Seven years later while living in Aspen, Colorado, he was charged with a felony for tampering with drug evidence after another man was arrested at a nightclub.

Lee was accused of grabbing two baggies of ecstasy that were dropped on the venue's floor when the accused dealer was seized by police.

He told officers he swallowed the contents of one bag and tried to hide the other, according to a report in the Aspen Daily News.

Clayton's uncle Jim McGeeney told DailyMail.com, 'I do not believe they froze to death,' he said. 'It wasn't cold enough. At 2am on Monday, they were alive. Tuesday, the temperature wasn't low enough for them to freeze to death'

Eventually, he pleaded guilty to misdemeanor counts as part of a plea deal and was given two years of unsupervised probation.

Judge Gail Nichols told him in Pitkin County District Court: 'I think you're learning a lesson in a very hard way.'

Meanwhile, construction worker McGeeney's fiancée April has said she is still too traumatized to talk about what she discovered and her loving partner.

Willis answered the door to cops after April's discovery in his underwear and clutching a wine glass.

His attorney John Picerno has said: 'He has nothing to hide. He went to the police station and spoke with officers without a lawyer present. He allowed them to search his house… these were his friends.

'He'd bought tickets for them all to go to the next Chiefs game – he didn't want any harm to come to any of them. There was no ill will…

'He had absolutely nothing to do with their deaths.'

The attorney said Willis did not hear the victims' loved ones banging on his door because he sleeps wearing headphones and has a fan on. He did not see anxious Facebook messages until after the police arrived.

More than 200 mourners packed a local funeral home on January 20 to bid farewell to McGeeney, father of a 15-year-old daughter from a previous relationship.

'April and Clayton were devoted to each other,' the latter's uncle Jim McGeeney told DailyMail.com.

'Clayton was living his best life. He'd had a few problems in his earlier years, but he'd sorted them all out and was living life to the full. He was truly a good example to everyone.

'He'd get up early just to see the sun rise across the lake. He had a bad motorcycle accident two years ago on his Harley Davidson in the Ozarks and was in the hospital for several weeks. He was a fighter.'

In a message to Willis, he previously told DailyMail.com: 'Man up. Dude, just man up. You know what happened at that house with your so-called three buddies that you've known since school high school.

'And it's going to be found out. So come forward, let us know what happened. Let the families, let the city let people know what happened, if you did or did not do anything that caused their deaths.

'Don't just hide. Don't move away from the house, or whatever you may have done to cover up your mistake or your whatever.

'If somebody died in my house, I'm not gonna move. I'm not gonna run. I'm gonna find out what happened… if you're innocent.'

'Fifth man' Lee has hired attorney Andrew Talge. The criminal defense lawyer said his client had texted Willis after April and Ricky Johnson's mother had contacted him enquiring about their loved ones.

Crucial toxicology reports on the victims' bodies will not be ready for at least another four weeks, DailyMail.com has revealed.

The tests are being carried out at Frontier Forensics Midwest, a privately owned forensic and autopsy facility that provides services for authorities in Kansas and Missouri.

One of its investigators told us: 'They take at least six to eight weeks, and it's been less than two. Any information that is released from them will go through Kansas City police.'

Police captain Jake Becchina stated after the bodies were found: 'First and foremost, this case is 100% NOT being investigated as a homicide. There have not been any arrests (or) charges, and no one is in custody.

'The resident at the house was cooperative with detectives the day the deceased were discovered.'