A KNIFE thug who stabbed a man to death is facing a life sentence.

Alan Robertson struck Allan Doris in the heart outside a flat in Kennishead on February 13, 2023.

The 43-year-old Celtic fan tragically never recovered despite a friend coming to his aid.

Alan RoberstonAlan Roberston (Image: Police Scotland) Allan Doris  (Image: Police Scotland) (Image: Newsquest) Jurors heard claims Robertson, 33, did not know how Mr Doris was injured.

But, he was convicted of murder today following a trial at the High Court in Glasgow.

After the verdict, prosecutor Chris MacIntosh told how Robertson already had convictions for violence and possession of offensive weapons including an axe.

Judge Douglas Brown adjourned the case until next month when the killer will learn the minimum he will spend behind bars.

Robertson was remanded in custody meantime.

The men had initially been in Robertson's high-rise flat in Kennishead Avenue with others before Mr Doris left.

Roberston came out after him. There were claims Mr Doris assaulted Roberston.

The killer was then described by one witness as "absolutely raging".

He went back to his flat, stormed back out and made a "full force thrusting motion" with his arm towards the chest of the victim.

(Image: Newsquest) (Image: Newsquest) Mr Doris was heard to groan: "Ah, you have stabbed me."

As Robertson returned to his home, it was then he was clocked with a "shiny and silver" item in his hand.

Mr Doris begged a friend to get him an ambulance. By the time they got downstairs, he was slumped on the floor of the lift.

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Mercy crews arrived, but could not save Mr Doris.

In his evidence, Robertson denied being angry that day. He also claimed not to know how Mr Doris came to be hurt and only recalled seeing him "rolling about the floor".

Prosecutor Mr MacIntosh, in his closing speech to the jury, said Robertson's testimony "did not make sense" and was "manufactured" to help him.

Following the hearing, Detective Chief Inspector Darren Munogee, Senior Investigating Officer, said: "Allan's murder has left his family absolutely devastated and our thoughts remain with them at this extremely difficult time.

"We hope that this conviction brings at least a degree of closure for his relatives and friends.

"I would like to thank responding officers, the investigative team and our partners at the Crown Office and Procurator Fiscal Service for all their hard work on this case to get justice for Allan and his family.

"We understand the devastating and significant impact violence has on individuals, families and communities and in this regard, will continue to work closely with partners and remain determined to bring perpetrators to justice."