Extended jail time for convicted murderer

September last year. It was revealed at Dundee Sheriff Court that Styles was frustrated that his mental health issues were ‘not being taken seriously’ by the prison.

Prosecutor Eilidh Robertson said Mr Napier was in the laundry room supervising Styles and six other prisoners. However, things took a sinister turn when he was alone with Styles.

Ms Robertson said: “The accused walked towards him with homemade weapon. The officer asked how he got it and the accused said he had bought it. He told the accused to put it in the bin but he said ‘no, I am going to stab you’.

“Mr Napier sent a radio for assistance. The accused was repeatedly asked to drop it and eventually did.”

In a separate incident, in February, officers found a sock containing a padlock during a routine search of his cell.

Styles pleaded guilty to possessing the item as well as behaving in a threatening or abusive manner by brandishing the weapon and threatening to stab Mr Napier on September 4.

He also admitted being in possession of a sock containing a padlock on February 14.

Defence solicitor David Duncan said it was Styles’ position he sparked the incident in a bid for the prison to take his mental health issues more seriously.

Mr Duncan added that Styles had been punished internally by prison bosses which has seen him isolated from other prisoners.

Sheriff Alastair Carmichael ordered Styles to serve 18 months in prison after the initial 15 years of his life sentence is completed.

John Styles murdered artist Jeroen van Neijhof, above right, at a flat on Brown Constable Street in May 2018.