Boy shouted 'I've just done him' after teenager was stabbed

A teenager with a knife shouted "I have just done him" moments after a 16-year-boy was stabbed on a beach, according to a witness.

Kayden Moy was fatally injured on Irvine Beach on 17 May 2025.

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

Cole Turley, 18, pleaded guilty before trial to the murder charge. The two teenagers on trial have lodged a special defence of incrimination against him.

Kelsey Robinson, 24, told the court she was out for a walk at the beach with her partner and baby that night when three teenagers ran in her direction.

She said one of them, who was topless and holding a knife, was acting like he was proud of something.

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

It is alleged Stewart and the other teenager had previous ill-will and malice towards him.

Robinson 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, before three teenagers ran in her direction. One was holding a knife.

She added the boy stabbed the knife into the grass, and recalled it was like a kitchen knife with a black handle.

When asked by prosecutor Liam Ewing KC if she had a view on what he was doing with the knife Robinson replied: "Maybe cleaning it."

The trial previously heard that Turley, Stewart and the 15-year-old were part of The Murray Boys gang in East Kilbride in South Lanarkshire.

Moy and his friends were stated to be members of the rival Himshie gang.

Robinson stated the trio walked by her and she heard the teenager with the knife shout: "I have just done him."

She said his demeanour was like he was proud of what he had, saying he acted like "it was something to shout and boast about, not like a panic".

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

Jemma Bruce, 23, told jurors she and a friend were approached by the three teenagers.

She said they were quite frantic and "in a panicked state covered in blood."

Bruce stated one of the teenagers stuffed a knife into the waistband of his trousers before asking her and her friend where they could get a taxi.

She added: "I thought they had been stabbed and we were concerned."

Jurors heard that the woman's friend took a video of the trio which was shown to the court.

Miss Bruce claimed that she heard one of them say: "They just took a picture of us."

The teenagers were then said to have hid in bushes.

Craig Stroat, 56, was the first paramedic to arrive at the scene.

He told jurors that he found Moy "unconscious, unresponsive and not breathing very well at all."

Stroat stated that he gave Moy oxygen to assist with his breathing but shorty after that he went into cardiac arrest.

The witness told the court that he and his colleague then gave CPR to Moy, who had a stab wound on his left side.

The trial, before Judge Lord Scott, continues.