Mystery fifth friend at home where Chiefs fans were found dead in backyard has come forward with new details

A fifth friend has come forward claiming he was present at the Kansas City Chiefs watch party where three men were later found dead in their pal's backyard.

David Harrington, 37, Ricky Johnson, 38, and Clayton McGeeney, 36, were all found dead outside a home in Kansas City, Missouri, rented by Jordan Willis on January 9. This was two days after they went over to watch the Chiefs take on the LA Chargers.

It wasn't until police knocked on the door to conduct a welfare check - after receiving a call from one of the men's fiancée - that Willis had any idea that his friends were dead in his backyard, according to his lawyer, John Picerno.

Willis allegedly didn't think it was 'unusual for his friends to have left their cars there overnight', and had not realized people were looking for them.

However, as police further investigated the scene, they confirmed there was a body on the back porch of Willis' home and another two bodies in the backyard.

Kansas City police Captain Jake Becchina has stated that the case is '100 percent not being investigated as a homicide'.

Becchina said in a statement: "There are no specific threats or concerns for the surrounding community at this time. The resident at the house was cooperative with detectives the day the deceased were discovered."

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Now, a fifth person who claims to have been at the NFL watch party, has revealed new details about the trio's final hours.

The man - who has not been named publicly - told Fox 4 that when he left the house, Willis and his other three friends were still awake.

It was also stressed that the man was not the last person to see Harrington, Johnson, and McGeeney alive before they were found dead.

The man's attorney, Andrew Talge, told Fox 4 that he had arrived at Willis' house at around 7pm before leaving around midnight.

The four other men were reportedly watching Jeopardy! when the man left, his attorney claims.

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Picerno has claimed Willis was sleeping on the couch with a loud fan running next to him when friends and family members of the deceased came looking for him.

Willis also allegedly didn't see a message from one of the men's wives until after he was contacted by police.

Speaking to the New York Post, Picerno said: "He was asleep. He was asleep on the couch.

"The last memory he has is of them leaving [out] the front door, he doesn’t know what happened, um, with them, until you know, when the police came Tuesday night to his house."

The story has since been questioned by the families of the deceased.

A toxicology report is expected to shed more light on the incident, and hopefully provide answers as to why the men passed away outside while their cars and Willis' house were just yards away.

Willis has since moved out of the home.