Thursday 29 October 2026Compiled from published reports. Every claim links to its source.

Ireland Crime

Every case followed from the first report to the sentence, or to where the reporting stopped.

Case No. 12414Violent disorder and assault causing harm · Co. Dublin · 18 Dec 2018

Prisoner gets six more years for Mountjoy jail stabbing and Temple Bar knife attack

Dean Teeling was sentenced at Dublin Circuit Criminal Court to three years for each of two offences, to run consecutively, for a 2018 stabbing at Mountjoy prison and a 2022 knife attack in Temple Bar. Brad Dempsey was sentenced to 18 months for affray in the same prison assault.

  1. Reportednot reported
  2. Arrestednot reported
  3. Chargednot reported
  4. In courtnot reported
  5. Verdictnot reported
  6. Sentenced14 Oct
reportedhappened, not reportedlatest stagenot yet

Key facts

consolidated from all reports
17 statements extracted from the articles
  • whatTeeling repeatedly stabbed the victim in the back during a melee involving six men. (leinsterexpress.ie)
  • whatIn the Temple Bar attack, Teeling made a single stabbing motion to the victim's chest. (leinsterexpress.ie)
  • whatDempsey kicked the victim once after the victim had been put on the floor during a melee. (leinsterexpress.ie)
  • whereThe prison attack happened in a games room in Mountjoy prison. (leinsterexpress.ie)
  • whenThe Mountjoy prison attack took place on 18 December 2018. (leinsterexpress.ie)
  • whenThe Temple Bar knife attack took place on 8 January 2022. (leinsterexpress.ie)
  • causeTeeling claimed to gardai that the victim had sexually assaulted a relative of his and that the attack was an act of vengeance. (leinsterexpress.ie)
  • investigationThe prison attack was caught on CCTV. (leinsterexpress.ie)
  • chargeTeeling pleaded guilty to violent disorder and assault causing harm over the prison attack. (leinsterexpress.ie)
  • chargeTeeling pleaded guilty to assault causing harm for the Temple Bar knife attack. (leinsterexpress.ie)
  • chargeDempsey pleaded guilty to affray at Mountjoy prison. (leinsterexpress.ie)
  • courtJudge Martin Nolan described the prison assault as pretty savage. (leinsterexpress.ie)
  • sentenceJudge Nolan imposed three-year custodial sentences for each offence, to run consecutively. (leinsterexpress.ie)
  • sentenceDempsey was sentenced to 18 months imprisonment for his involvement in the prison affray. (leinsterexpress.ie)
  • otherThe victim had six stab wounds to the back and one cut to a finger. (leinsterexpress.ie)
  • otherThe victim declined to make a statement to gardai and did not make a complaint. (leinsterexpress.ie)
  • otherThe court heard that Teeling has a long history of offending, including convictions for knife assaults. (leinsterexpress.ie)

The reporting

newest first
  1. 14 Oct2025
    Sentencedleinsterexpress.ie, first report
    Prisoner gets six more years behind bars for jail stabbing

    Reports the sentencing of Dean Teeling for the 2018 Mountjoy prison stabbing and the 2022 Temple Bar knife attack, and the 18-month sentence for Brad Dempsey for affray in the prison assault.

    convicted, Dean Teeling, 36, named, irish (judged from name)Dean Teelingvictim, Shane Fay, irish (judged from name)Shane Fayconvicted, Brad Dempsey, 24, named, irish (judged from name)Brad Dempsey