HARDENED murder squad detectives yesterday welcomed the life sentence slapped on a drug taker who beat a pensioner to death in a cold-blooded and senseless attack.
Keiryn Nisbet was today beginning an 18-year sentence for murdering Ronnie Simpson, 67, following an all-day drug and booze binge.
Last night officers branded Nisbet a “cold and callous” killer who struck without an apparent motive for his random and brutal attack.
Detective Chief Inspector Bob Cowper, who led the inquiry, said the violence behind the motive-free brutality chilled him to the bone. He said: “Keiryn Nisbet did not know Ronnie Simpson and throughout our inquiries we have been unable to establish any possible motive for this violent attack, which resulted in the 67-year-old’s death.
“He has proven himself to be a cold and callous individual, who has shown no remorse for his actions and the impact they have had on Mr Simpson’s family.
“With Keiryn Nisbet now set to spend a considerable period of time behind bars, I sincerely hope that Mr Simpson’s family can put this horrendous ordeal behind them and begin to move on with their lives.”
Nisbet, 22, had taken heroin and cocaine and had been thrown out of a pub before he stumbled into Mr Simpson’s flat in Mayfield Drive, Armadale, on October 6 last year. After a frenzied assault he fled the blood splattered crime scene.
Just hours after killing the dad-of-two Nisbet then boasted on Facebook he had “knocked f*** out of a boy last night” but “canny mind a thing”.
Judge Norman Ritchie QC told the High Court in Glasgow yesterday: “This was a horrific and sustained attack on an old man in his own home. You are a danger to the public.
“For no known reason you assaulted Mr Simpson. This brutal and senseless attack left Mr Simpson lying dying in the living room of his flat.
“You did not get help for him.He either died in front of you or you left him to die alone.”
Nisbet had been drinking in the Blether Inn, and was said to be “really drunk” by early afternoon.
After the murderous thug was finally thrown out of the pub, prosecutors believed he went to Mr Simpson’s home.
Nisbet repeatedly punched, kicked and stamped on his victim. He also struck the OAP on the head with a blunt instrument and dragged him across the floor of his house.
One of Mr Simpson’s neighbours told the court that he had heard “an old man squealing” inside the property on the night he died. Forensic scientists found blood from Nisbet, of St Paul’s Drive, Armadale, on the bedroom wall of his victim’s house.
His trial heard police had a full DNA profile which matched that of Nisbets.
Nisbet had denied ever being in Mr Simpson’s house but was trapped by the damning forensic evidence.