Courts / Roscommon / Report
'Learned Impunity': the trial of garda murderer Stephen Silver
Summary
A jury at the Central Criminal Court has convicted Stephen Silver of the capital murder of Garda Colm Horkan in Castlerea, County Roscommon, on 17 June 2020. Silver, a 46-year-old motorcycle mechanic, was sentenced to a minimum of 40 years imprisonment. The court heard that Silver had deliberately provoked an encounter with gardaí that evening, conducting dangerous motorcycle manoeuvres around the Knockroe estate in Foxford and making verbal challenges to armed officers. When Garda Horkan, a 25-year veteran based in Charlestown, County Mayo, approached Silver and his companion James Coyne, a struggle ensued over the officer's firearm. Silver disarmed Garda Horkan and fired eleven shots at the wounded officer as he lay on the ground. The defence argued Silver was experiencing a relapse of bipolar affective disorder at the time, but the jury rejected this claim. Expert testimony established that Silver's pattern of prior involuntary psychiatric admissions had created a "learned impunity" whereby he expected diffusion and hospitalisation rather than serious criminal consequences. Garda Helen Gillen, who witnessed the incident, confronted and arrested Silver unarmed. Stephen Silver pleaded guilty.
Who, what, where, when and why
What: Report matter: 'Learned Impunity': the trial of garda murderer Stephen Silver. Charges or matters: manslaughter and admitted shooting and killing Gda Horkan. "The main issue is Mr Silver's state of mind at the time," defence counsel Dominic McGinn SC told the trial. Procedural stage: sentence
When:
- June 17, 2020 Other
- June 16, 2020 Other
- June 17 Incident
- June 18, 2020 Hearing Or Sentence
- June 18 Other
- 1997 and 2010 Other
- 2018 and 2019 Other
- 2023-03-15 Publication
Why: Dr Kelly said Silver requested a glass of water and then asked for a second one "because he thought the first one was poisoned". CNI source report
Case subjects
Defendant
Charges: manslaughter and admitted shooting and killing Gda Horkan. "The main issue is Mr Silver's state of mind at the time," defence counsel Dominic McGinn SC told the trial (Alleged Or Contested)
Outcome: However, instead of resuming his life, Silver will now serve a minimum sentence of 40 years in prison for capital murder, after a Central Criminal Court jury rejected his defence that he was suffering a relapse of his bipolar disorder that diminished his responsibility at the time of the shooting.
Defendant
Charges: manslaughter and admitted shooting and killing Gda Horkan. "The main issue is Mr Silver's state of mind at the time," defence counsel Dominic McGinn SC told the trial (Admitted)
Plea: Guilty
Outcome: However, instead of resuming his life, Silver will now serve a minimum sentence of 40 years in prison for capital murder, after a Central Criminal Court jury rejected his defence that he was suffering a relapse of his bipolar disorder that diminished his responsibility at the time of the shooting.
Places mentioned
- Central Criminal Court
- stopping at Castlerea Garda Station
- Castlerea
- local residents contacted Castlerea Garda Station
- and away from Castlerea Garda Station
- we went by the garda station
- them back at the garda station
- saw Silver in the garda station
- with detectives at Castlerea Garda Station
- to gardaí in the garda station
- Roscommon
- Knockroe estate
- Mr Coyne's house
- Central Mental Hospital
- Roscommon
- Roscommon Hospital
- Roscommon General Hospital
- Dublin
- Main Street
- Patrick Street
Topics
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