Kaiden Williams stabbed 29-year-old Peter Wass in the chest during the incident in Hamilton Avenue, Chapeltown, which took place shortly after 2.30pm on Thursday, March 2, this year.

Mr Wass was stabbed three times and received a 22-cm deep wound that penetrated his heart.

Members of the public went to his aid and got him into a car to take him to hospital.

They then flagged down an ambulance in nearby Spencer Place and a doctor and paramedics gave him emergency treatment.

He was rushed by ambulance to Leeds General Infirmary but was pronounced dead a short time later.

A murder investigation was launched led by detectives from West Yorkshire Police Homicide and Major Enquiry Team.

CCTV footage showed that Mr Wass had been a passenger in a BMW that had been travelling in a convoy in the area with another car. He then became involved in an altercation in the street with a male who produced a large knife. A baseball bat was seen next to Mr Wass as he lay injured.

Other footage showed the suspect then running off from the scene.

He was subsequently identified as Kaiden Williams and enquiries were made to arrest him.

It was established that he had fled Leeds for the north-east of England.

As a result of enquiries, he was traced to an address in Hartlepool and arrested in an operation supported by armed officers from Cleveland Police on Sunday, March 12.

He was brought back to Leeds and charged with Mr Wass’s murder and possession of a knife.

Williams, aged 22, of Edgware Mount, Harehills, pleaded not guilty to murder claiming self-defence. A jury at Leeds Crown Court found him not guilty of murder but convicted him of manslaughter. Prior to the trial, he pleaded guilty to possession of an offensive weapon in relation to the knife.

Today at Sheffield Crown Court, he was given a 14-year extended sentence of nine years custody with five five-year extended licence on his release.

Senior Investigating Officer, Detective Chief Inspector Sam Freeman said: “Although Peter Wass was killed in circumstances which appeared to show he was taking an active part in the confrontation with Williams, no-one deserves to have their life taken from them in such a sudden and violent way.

“The impact that his death has had on his family, including his two children, is just as painful and heartbreaking regardless of any background to the incident, which remains unclear.

“His death very starkly illustrates the utterly tragic consequences that can occur when people carry knives and are prepared to use them.”