A 20-year-old was stabbed to death after he called his teenage murderer a "rat" during a drug-related row, the Central Criminal Court has heard.
The 17-year-old defendant, who cannot be named because he is a minor, pleaded guilty last month to the murder of Glen 'Ossie' Osborne (20) at Ballybough House, Ballybough, Dublin last April 15.
At a sentence hearing yesterday, the court heard that Mr Osborne's girlfriend Lauren Cray gave birth to their son two months after he was murdered.
The court also heard that the defendant phoned Mr Osborne's mother before the stabbing and said: "Wait and see what I'm going to do."
In a written statement to the court, Ms Cray said he was excited when he found out he was going to be a father and cried when he first heard the child's heartbeat.
Glen's mother Rose said he was a "grafter" who got up early every morning to go to work and never brought trouble to her door.
"Glen grew into a lovely young man with a cheeky smile. He had the gift of the gab and he was a charmer with the ladies. He was delighted when Lauren got pregnant," she said.
"When he was murdered it was the start of my nightmare. I died with Glen that day.
"He would have been 21 in June this year, and that was worse than the funeral of my only child. My reason for living has been taken away from me".
Detective Sergeant Ken Hoare of Mountjoy Garda Station told Pauline Whalley SC for the Director of Public Prosecutions that the accused had a "somewhat troubled upbringing" and had been homeless with his mother during his adolescence.
The deceased, he said, had been promised by his employer he would begin a carpentry apprenticeship, but when the Covid-19 restrictions came in, he was laid off and started taking cannabis and cocaine.
On the Sunday before he died, he went with the defendant and they got drugs without making payment. The following day, the windows of Mr Osborne's home were smashed in what the detective said was retaliation for the fact that payment had not been made.
Mr Osborne believed the defendant had identified his home to those people telling them that he had "ratted him to a third party". One hour before the murder the defendant's own father sent him a message calling him a rat.
The defendant, carrying a white bag with a knife in it, took a taxi to Ballybough where he met the deceased at the entrance to Ballybough House.
Shortly before that, he had called Rose Osborne and told her: "Wait and see what I'm going to do." The defendant put down the bag before a fight broke out in which witnesses said Mr Osborne had the upper hand.
They were split apart and the defendant retrieved the bag before a second fight began.
Gda Hoare said the defendant could be seen on CCTV swinging his arm and stabbing Mr Osborne once in the chest.
He died having suffered a single stab wound that penetrated the heart.
The accused ran away but was on his way to Mountjoy Garda Station with his mother and aunt planning to hand himself in that night when he was stopped by a Garda patrol.
Gda Hoare said he was distressed and genuinely remorseful. In a written letter of apology the defendant said he was sorry and heartbroken at what he had done.
Addressing Rose Osborne, he said: "I say a prayer every night that you can get through this."
Mr Dwyer told Mr Justice Paul McDermott that because his client is a minor he does not face a mandatory life sentence.
He asked the judge to put rehabilitation at front and centre of sentencing and to consider his client's early guilty plea, that he was 16 at the time, has significant cognitive deficits and has shown "very real expressions of remorse".
Mr Justice McDermott remanded the defendant at Oberstown Detention Centre until a further hearing on December 7.