Man's disturbing confession to police led them to gruesome discovery of his housemate's concrete tomb

A man made a chilling confession to police after contacting them and admitting to killing his missing housemate years earlier.

In 2009, Christophe Borgye vanished from his home in Ellesmere Port, Merseyside, with authorities initially believing the Frenchman had left the country without telling anyone.

However, it would take a several more years for the true story of what happened to the 36-year-old to come to light, when officers working for Cheshire Police received a phone call from a man named Sebastian Bendou, who admitted to murdering his former housemate and hiding his remains inside a concrete tomb in the property's back garden.

It would later transpire that Bendou had not worked alone, with Manuel Wagner and Dominik Kocher all later being found guilty of killing Ryanair steward Borgye.

Christophe Borgye was murdered by his housemates and then entombed in an outhouse (Prime Video/Handout)

The chilling case is set to be revisited later this month in an upcoming Prime Video two-part documentary, Murder in Concrete, which shows how officers were able to untangle the case and secure convictions for Bendou, Kocher and Wagner.

In April 2013, Bendou contacted the police and confessed to Borgye's killing.

Upon arriving at the police station, he would deliver the following confession to then inspector Anton Sullivan: "I want to confess to killing my housemate in 2009, we had an argument and I buried him under the shed at the bottom of the garden."

It was from here that authorities were able to piece together what had actually happened to Borgye.

Four years before the confession in April 2009, Borgye informed his housemates that he was relocating from Liverpool to Brussels. Unbeknownst to him, Kocher - who owned the property - had already begun to plan his murder.

One night, when the 35-year-old came home from work, he was told by the three men that a 'deep clean' of the house was planned for the following day.

Police would uncover the truth about what happened to him after Sebastian Bendou (pictured) confessed (Cheshire Police)

"The next morning they called the victim downstairs to the kitchen where it had all been set out," Sullivan explained to Liverpool ECHO.

The tarpaulin had been laid out, they were wearing gloves, they had overshoes on and each one of them had a knife.

"The victim was asked to start cleaning underneath the sink and that's when they attack him."

Borgye was then set upon with a combination of knives and claw hammers. He was then entombed in the property's outhouse, where his body would lie until Bendou's confession.

The three men later moved away from the area and carried on their lives, until Bendou - unable to live with the guilt - phoned police and told them: "This is too much for my mind."

Bendou, Kocher and Wagner would subsequently be arrested and sentenced for their crimes, receiving minimum terms of 14, 23 and 16 years respectively.

Murder in Concrete will stream on Prime Video from 31 August.