Teen 'boasted' he had 'done' Kayden Moy after beach stabbing, court hears

A teenager with a knife “boasted” about “doing” a 16-year-old stabbing victim, a murder trial has heard.

Kayden Moy died after being stabbed on Irvine Beach on May 17, 2025.

Jay Stewart, 18, and a 15-year-old boy are on trial at the High Court in Glasgow charged with his murder.

The charge says Stewart and the 15-year-old, while acting with Cole Turley, 18, pursued Kayden and caused him to fall to the ground before they repeatedly stabbed him.

It is alleged that Stewart and the other teenager had previous ill will and malice towards Kayden.

Turley pled guilty to the murder before trial. The two other teenagers on trial have lodged a special defence of incrimination against him.

The trial had previously heard that Turley, Stewart and the 15-year-old were part of The Murray Boys gang of East Kilbride, Lanarkshire. Kayden and his friends were stated to be members of the rival Himshie gang.

On Wednesday, jurors heard evidence from a 24-year-old woman.

She stated that she was out for a walk at the beach with her partner and baby that night.

She claimed that she heard a lot of shouting and screaming coming from sand dunes in the distance, which she likened to a “school fight”.

The witness believed that she saw someone get punched and the person who did it run away.

She stated that three teenagers ran in her direction, with a topless youth holding a knife in front of the others.

The witness said: “Just before he got to the bottom, as he was jogging, he kneeled down and stabbed the knife in the grass and got up and continued to run.”

She stated that it was “maybe” like a kitchen knife with a black handle.

Prosecutor Liam Ewing KC asked the witness if she had a view on what he was doing with the knife and she replied: “Maybe cleaning it.”

She stated that the trio walked by her, and she heard the teenager with the knife shout: “I have just done him.”

Mr Ewing asked: “What was his demeanour?”

She replied: “As if he was proud of it, as if it was something to shout and boast about, not like a panic like, ‘what have I just done?’”

The witness also recalled the teenager with the knife “shouting one-nil”.

Another woman, 23, told jurors she and a friend were approached by three teenagers.

She said: “They just ran towards us quite frantic in a panicked state covered in blood.”

She stated one of the teenagers “stuffed” a knife into the waistband of his trousers.

She added: “They asked me and my friend where they could get a taxi to get out of here pretty quick.

“I thought they had been stabbed and we were concerned.”

Jurors heard that the woman’s friend took a video of the three teenagers which was shown to the court.

She claimed that she heard one of them say: “They just took a picture of us.”

The teenagers were then said to have hidden in some bushes.

A paramedic was the first medical personnel to arrive at the scene.

He told jurors that Kayden was “unconscious, unresponsive and not breathing very well at all”.

He stated that he gave Kayden oxygen to assist with his breathing, but shortly after he went into cardiac arrest.

The witness told the court that he and his colleague then performed CPR on Kayden.

Mr Ewing asked if the paramedic was able to observe any injuries and he replied: “Yes, as far as I could see he had a stab wound to his left side. There wasn’t blood showing.”

The man stated that Kayden was given treatment by a consultant-led team “for a long time,” which included a blood transfusion at the scene.

Kayden was taken to a hospital in Kilmarnock by ambulance. Jurors also heard that an air ambulance arrived at the beach.

The trial continues before Judge Lord Scott.