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 Osborne, at Ballybough House, Ballybough, Dublin, on April 15 this year.
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 had phoned Mr Osborne's mother before the stabbing and told her: "Wait and see what I'm going to do."
In a written statement to the court, Ms Cray said Mr Osborne was excited when he found out he was going to be a father and cried when he first heard the child's heartbeat. All he wanted, she said, was to have his son and for them to be together.
Mr Osborne's mother, Rose, said he was a fighter from the day he was born six and a half weeks premature.
He was a "grafter" who got up early every morning to go to work and never brought trouble to her door.
"When he was murdered, it was the start of my nightmare. I died with Glen that day," she said.
Detective Sergeant Ken Hoare of Mountjoy garda station told the court the deceased had been laid off when the Covid-19 restrictions were introduced and he 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 payment had not been made.
Mr Osborne believed the defendant "ratted him to a third party". There were "angry messages" and the defendant was labelled a "rat".
The defendant was remanded until a further hearing on December 7.