Ireland Man jailed for four years and seven months over €560,000 cannabis at Shannon Airport
Seán Grehan, a 29-year-old man of Blackrock, Dublin, was charged over two suitcases of cannabis he carried from an Aer Lingus flight from Boston through the Green Channel at Shannon Airport on 12 November 2025. Forensic Science Ireland examined 62 packages weighing 28kg, with a street value of €560,000. Grehan was charged with possession of cannabis for sale or supply under Section 15A of the Misuse of Drugs Act 1977, and at Ennis Circuit Court he entered a signed guilty plea. Judge Francis Comerford jailed him for four years and seven months (55 months), with the final 18 months of a 73-month term suspended and backdated to when he first went into custody, as reported on 5 August 2026.
- Reportednot reported
- Arrestednot reported
- Chargednot reported
- In courtnot reported
- Verdictnot reported
- Sentenced5 Aug
Key facts
consolidated from all reports- What happened
- Seán Grehan, a 29-year-old man, took two suitcases of cannabis from an Aer Lingus flight from Boston.
- Where
- The cannabis was brought through the Green Channel at Shannon Airport.
- When
- The offence took place on 12 November 2025.
- Investigation
- A customs detector dog named Gus alerted officials to the luggage.
- The drugs were detected after an X-ray, and Forensic Science Ireland examined 62 packages weighing 28kg.
- The cannabis had a street value of €560,000.
- Cause
- Grehan told gardaí he was due to have a drug debt of €8,000 to €9,000 wiped off and be paid €10,000 for the second suitcase.
- Other details
- Grehan told gardaí he was a victim of drug dealing, while his counsel said he was a drugs courier.
- Grehan is a first-time drug offender who made admissions and entered a signed guilty plea.
- Charges
- Grehan was charged with possession of cannabis for sale or supply under Section 15A of the Misuse of Drugs Act 1977.
- In court
- The case was heard at Ennis Circuit Court before Judge Francis Comerford.
- Sentence
- Grehan was sentenced to four years and seven months, or 55 months, from a 73-month term.
- The final 18 months of the 73-month term were suspended and backdated to when Grehan first went into custody.
12 statements extracted from the articles
- whatSeán Grehan had taken two suitcases full of cannabis from an Aer Lingus flight from Boston. (limerickleader.ie)
- whereThe cannabis was brought through Shannon Airport. (limerickleader.ie)
- whenThe offence took place on 12 November of the previous year. (limerickleader.ie)
- causeGrehan told gardaí he was due to have a drug debt of €8,000 to €9,000 wiped off and to be paid €10,000 for the second suitcase. (limerickleader.ie)
- investigationA customs sniffer dog alerted officials to the luggage, and the drugs were detected after an X-ray. (limerickleader.ie)
- investigationForensic Science Ireland examined 62 packages of cannabis weighing 28kg, with a street value of €560,000. (limerickleader.ie)
- chargeGrehan was charged with possession of cannabis for sale or supply under Section 15A of the Misuse of Drugs Act 1977. (limerickleader.ie)
- courtThe case was heard at Ennis Circuit Court before Judge Francis Comerford. (limerickleader.ie)
- sentenceGrehan was jailed for four years and seven months, or 55 months. (limerickleader.ie)
- sentenceThe sentence was a 73-month term, with the final 18 months suspended and backdated to when Grehan first went into custody. (limerickleader.ie)
- otherGrehan told gardaí he was a victim of drug dealing, and his counsel said he was a drugs courier. (limerickleader.ie)
- otherGrehan is a first-time drug offender who made admissions and entered a signed guilty plea. (limerickleader.ie)
The reporting
newest first- 5 Aug2026Customs dog sniffs out €560k airport cannabis haul as former sales associate jailed
Reports the Ennis Circuit Court sentencing of Seán Grehan, including the detection by customs dog Gus, the €560,000 street value, the 55-month sentence with 18 months suspended, the drug debt motive he gave gardaí, and his guilty plea.
convicted, Seán Grehan, 29, male, named, irish (judged from name)Seán Grehan