A teenager who repeatedly stabbed another teenager with a broken glass vodka bottle, after he refused to give him €2 for a bus fare has been jailed for 18 months.

The defendant turned 18 since the attack in the Waterpark area of Carrigaline in County Cork in June of this year.

Cork Circuit Criminal Court was told that the youth, who cannot be named for legal reasons, left the 17-year-old "for dead".

Detective Garda Declan Healy of Carrigaline Garda Station said the incident happened after 10pm on 6 June when the victim was approached by teenagers who told him to hand over €2 for a bus fare.

The teenager declined to give them the money.

Det. Garda Healy said another teenager, not before the court, punched the victim in the face and knocked him to the ground.  While he was on the ground, the defendant picked up a glass bottle and smashed it over the victim's head.

Judge Seán Ó Donnabháin heard how he then used the broken bottle to stab the injured teen in the back while he was lying on the ground.

The boy was stabbed six times, but according to Det. Garda Healy thankfully avoided long lasting physical injuries.

The victim's phone fell out of his pocket in the attack and the defendant fled the scene with it.

The attack was filmed by another youth and put online. 

In a victim impact statement, the mother of the injured party said the family had been left devastated by the "frenzied" attack.

She said when she arrived at the scene she saw her son being transported on to a stretcher into an ambulance.  The scene, she said, resembled a crime shot from the show CSI.

"It was a needless and frenzied attack - it was devastating for my son and for our family.  This was every parent's nightmare.  We believed our son was dead.  Social media added another layer of hurt."

She said she felt sick with anxiety when her son and his other siblings were out of the house and not contactable by phone.

"We are haunted by the nightmare scene of our son lying in the back of an ambulance being bandaged and telling us he didn't do anything wrong.  It will remain with us for the rest of our lives."

Judge Ó Donnabháin condemned the filming and sharing of the video. He said the defendant showed an extreme amount of violence for a man of his age.

"There was a considerable amount of violence.  He had a victim on the ground.  That he should have hit him with a bottle, and then stabbed him in the back with the broken bottle."

The defendant appeared before the court on a signed plea of guilty to assault causing harm contrary to Section 3 of the Non Fatal Offences Against the Person Act.

Defence Counsel Emmet Boyle BL said his client had left Cork following the incident after finding himself the subject of hatred.  He has successfully engaged with support services and is very remorseful for his actions.

The 18-year-old, who has no previous convictions and has never been before the courts before, wrote to the family of his victim to apologise for his actions.

Judge Ó Donnabháin said the case merited a custodial sentence in spite of the youth of the defendant and his lack of previous convictions.  He jailed him for two-and-a-half years suspending the final year of the sentence.