A man who stabbed to death a “much-loved father, son and brother” has been sentenced to a minimum sentence of 17 years.

Alan Robertson, 33, punched Allan Doris in the heart outside her flat in Kennishead Avenue on February 13, 2023.

The 43-year-old did not recover from his injuries despite a friend coming to his aid.

Jurors heard claims that Robertson did not know how Doris was injured.

But he was found guilty of murder in October following a trial at Glasgow High Court.

police scotland

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

Judge Douglas Brown told Robertson in handing down his life sentence that Doris was a “much loved father, son and brother.”

The judge added: “The impact of their death has been devastating and their lives will never be the same.

“Losing him at a relatively young age is bad, but losing him so suddenly to brutal violence is almost unbearable.

“Nothing you can say or do can adequately reflect your loss.

“This was a brutal knife attack aimed at his chest.

“It must have been clearly obvious that it would probably result in his death.

“The fact that he died so quickly reflects the nature of the attack and the serious injuries inflicted.”

The men had initially been in Robertson’s high-rise apartment with other people before Doris left.

Roberston took off after him and there were claims that Doris assaulted Roberston.

A witness then described the killer as “absolutely furious”.

He returned to his apartment, stormed out, and made a “full force pushing motion” with his arm toward his victim’s chest.

Mr Doris was heard moaning: “Ah, you’ve stabbed me.”

When Robertson returned home, he was found with a “shiny, silvery” object in his hand.

Mr. Doris begged a friend to get him an ambulance. When they reached the bottom, he was already collapsed on the floor of the elevator.

Emergency crews arrived, but were unable to save Mr. Doris.

In his testimony, Robertson denied being angry that day. He also claimed not to know how Mr Doris was injured and only remembered seeing him “rolling on the ground”.

Prosecutor MacIntosh, in his closing speech to the jury, said Robertson’s testimony “made no sense” and was “fabricated” to help him.

Victoria Young, defending, said at the sentencing that her client has maintained his position since the trial.

Follow STV News on WhatsApp

Scan the QR code on your mobile device to get the latest news from around the country.