Boy shouted ‘I’ve just done him’ after teenager was stabbed

After a 16-year-old boy was stabbed on the beach, a knife-wielding teenager shouted, “I just did that,” according to an eyewitness.

Kayden Moy was fatally injured at 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 murder.

Cole Turley, 18, pleaded guilty before trial to the murder charge. The two youths on trial presented a special criminal defense against him.

Kelsey Robinson, 24, told the court she was walking on the beach that night with her partner and baby when three teenagers ran towards her.

He said the man, topless and holding a knife, acted as if he was proud of something.

The charge states that Stewart and the 15-year-old boy followed Moy as he moved with 18-year-old Cole Turley, causing him to fall to the ground before stabbing him multiple times in the body.

It is alleged that Stewart and the other teenager had previously been abusive and malicious towards him.

Robinson claimed he heard a lot of yelling and screaming coming from the dunes in the distance and likened it to a “school fight”.

The witness said he saw someone being punched and the person running away before three teenagers ran towards him. One was holding a knife.

He added that the boy stuck the knife into the grass and recalled that it looked like a kitchen knife with a black handle.

Asked by prosecutor Liam Ewing if he had any idea what KC was doing with the knife, Robinson said: “Maybe he’s cleaning it.”

The young man shouted ‘one zero’

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

It was stated that Moy and his friends were members of the rival Himshie gang.

Robinson stated that he walked past the trio and heard the knife-wielding youth shout, “I just finished him.”

She said his behavior was as if he was proud of what he had and that “it wasn’t like panicking, it was something to shout about and brag about.”

The witness also recalled the young man with the knife shouting “single zero”.

‘Panic situation’

Jemma Bruce, 23, told jurors three teenagers approached her and a friend.

He said they were quite frantic and “in a bloody panic.”

Bruce said one of the teenagers stuck a knife into the waistband of his and his friend’s trousers before asking where they could find a taxi.

He added: “I thought they had been stabbed and we were worried.”

Jurors heard the woman’s friend took video of the trio and it was shown to the court.

Ms Bruce claimed she heard one of them say: “They just took our picture.”

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

Craig Stroat, 56, was the first paramedic on the scene.

He told jurors he found Moy “unconscious, unresponsive and not breathing very well.”

Stroat stated that he gave Moy oxygen to help him breathe, but he suffered a heart attack soon after.

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

The hearing before Judge Lord Scott continues.