Alexander McKellar, 31, brought on the demise of 63-year-old Tony Parsons by hitting him along with his automobile on the A82 close to Bridge of Orchy, Argyll and Bute, on September 29, 2017.

Originally charged with murdering Mr Parsons, McKellar pleaded responsible to an amended cost of culpable murder.

McKellar and his twin brother Robert additionally admitted making an attempt to defeat the ends of justice on the High Court in Glasgow final month.

Both can be sentenced on the High Court in Glasgow on Friday.

McKellar admitted driving on the A82 at “excess speed and when unfit through alcohol”.

With “reckless disregard” for the results of his actions, he left Mr Parsons by the facet of the highway “in a remote location during the hours of darkness and in inclement weather”, inflicting his demise.

The courtroom heard in a story final month how a while between September 29, 2017 and January 3, 2021, the McKellar brothers returned to the A82 and moved Mr Parsons’s physique to the Auch Estate and buried him with an excavator in a peat lavatory the place animal carcasses have been disposed of.

Police launched a serious investigation following a tip-off from a girl McKellar had begun a relationship with in 2020, the courtroom heard.

She had requested him if there was something from his previous which will have an effect on their relationship, and he informed her he had hit Mr Parsons with an Isuzu D-Max pick-up whereas rushing.

Advocate depute Alex Prentice KC informed the courtroom that McKellar had mentioned to the lady that he had been “distracted” by headlights and struck one thing on the facet of the A82, which turned out to be Mr Parsons.

The lady left a can of Red Bull within the space the place Mr Parsons’s physique had been hidden and detectives later discovered the scene.

The brothers additionally hid Mr Parsons’s bicycle behind a waterfall on the Auch Estate however this has by no means been recovered, the courtroom heard.

The two males have been arrested on December 20, 2020 and Mr Parsons’s physique was recovered for forensic investigation in January 2021.

Mr Parsons was killed whereas on a 100-mile charity cycle from his residence in Tillicoultry, Clackmannanshire, to Fort William.

A lacking individuals inquiry was launched on October 2, 2017 when he didn’t return residence.

The bike owner’s household launched an announcement after the responsible pleas, saying he beloved “nothing more” than spending time along with his grandchildren.

The assertion mentioned: “As you can imagine, not knowing what has happened to someone and then the devastating news that we were provided has taken its toll on all of us as a family.

“At last justice has been done and we would like to thank not only the court officials and officers from Police Scotland’s major investigation team, Forth Valley Division; and other Police Scotland departments who worked on this case, but all the volunteers and mountain rescue teams who tirelessly searched for him in the earlier stages of the inquiry.”