Case No. 1337Assault causing serious harm, making threats to kill or cause serious harm · Co. Dublin · 23 Oct 2023

Adam Mitchell McGrath jailed for slashing former colleague's face at Dublin building site

Adam Mitchell McGrath, 32, slashed a former colleague's face with a blade at a building site near St Anne's Park, Dublin, on the morning of 23 October 2023, leaving the victim requiring 120 stitches and surgery. In a separate incident on 17 October 2023, McGrath threatened staff at a bike shop on Clontarf Road and caused over €15,923 in damage. McGrath pleaded guilty to assault causing serious harm and making threats to kill or cause serious harm. On 12 July 2025, Judge Martin Nolan sentenced him to six years in prison with the final two years suspended, plus two years of probation supervision and a no-contact order.

  1. Reportednot reported
  2. Arrestednot reported
  3. Chargednot reported
  4. In courtnot reported
  5. Verdictnot reported
  6. Sentenced12 Jul
reportedhappened, not reportedlatest stagenot yet

Key facts

consolidated from all reports
What happened
  • McGrath pleaded guilty to assault causing serious harm and making threats to kill or cause serious harm.
  • The attack left the victim requiring 120 stitches and surgery, with a facial nerve, saliva duct, vein and artery severed, permanent scarring, speech difficulties, and ongoing emotional trauma.
  • In a separate incident, McGrath threatened staff at a bike shop and caused over €15,923 in damage.
Where
The main attack took place at a building site near St Anne's Park, Dublin, and the bike-shop incident occurred on Clontarf Road.
When
The main attack occurred on the morning of 23 October 2023, and the bike-shop incident occurred on 17 October 2023.
Cause
  • McGrath and the victim had worked together earlier in the year, and McGrath sent a letter containing delusions to a colleague of the victim about a week before the attack.
  • McGrath has a diagnosis of schizophrenia and had gone off his medication before the offences.
Weapon
McGrath slashed the victim with a blade and used a hammer to break windows at the bike shop.
In court
Judge Martin Nolan set a headline sentence of eight and a half years at the Criminal Courts of Justice, Dublin.
Sentence
McGrath was sentenced to six years in prison with the final two years suspended for two years, plus two years of probation supervision and a no-contact order.
Other details
McGrath has no previous convictions.
20 statements extracted from the articles
  • whatMcGrath pleaded guilty to assault causing serious harm and making threats to kill or cause serious harm. (irishmirror.ie)
  • whatThe attack left the victim requiring 120 stitches and surgery. (irishmirror.ie)
  • whatA facial nerve, saliva duct, vein and artery were severed as a result of the injury. (irishmirror.ie)
  • whatThe victim has been left with permanent scarring and difficulties with his speech. (irishmirror.ie)
  • whatThe victim has ongoing emotional trauma and suffers from nightmares. (irishmirror.ie)
  • whatIn a separate incident, McGrath threatened staff in a bike shop and caused over €15,923 of damage. (irishmirror.ie)
  • whatMcGrath has a diagnosis of Schizophrenia, diagnosed in his early 20s. (irishmirror.ie)
  • whatMcGrath went off his medication and his condition returned before the offences. (irishmirror.ie)
  • whatMcGrath has no previous convictions. (irishmirror.ie)
  • whereThe main attack took place at a building site near St Anne's Park, Dublin. (irishmirror.ie)
  • whereThe separate bike-shop incident occurred on Clontarf Road. (irishmirror.ie)
  • whenThe main attack occurred on the morning of 23 October 2023. (irishmirror.ie)
  • whenThe bike-shop incident occurred on 17 October 2023. (irishmirror.ie)
  • causeMcGrath and the injured party had worked together earlier in the year and initially had a cordial relationship. (irishmirror.ie)
  • causeMcGrath sent a letter containing delusions with no basis in reality to a colleague of the injured party about a week before the attack. (irishmirror.ie)
  • weaponMcGrath slashed the victim with a blade. (irishmirror.ie)
  • weaponMcGrath used a hammer to break windows at the bike shop. (irishmirror.ie)
  • courtJudge Martin Nolan set a headline sentence of eight and a half years. (irishmirror.ie)
  • sentenceMcGrath was sentenced to six years in prison with the final two years suspended for two years. (irishmirror.ie)
  • sentenceMcGrath was placed under the supervision of probation services for two years post-release. (irishmirror.ie)

The reporting

newest first
  1. 12 Jul2025
    Man, 32, jailed for serious attack on former colleague

    Reports the sentencing of McGrath to six years (two suspended) plus two years' probation supervision and a no-contact order, following his guilty plea to assault causing serious harm and threats to kill. Also details a separate bike-shop incident on Clontarf Road in which he caused over €15,923 in damage.

    victim, maleconvicted, Adam Mitchell McGrath, 32, male, named, irish (judged from name)Adam Mitchell McGrath