Fuel scam earned gang €750,000 a month
The investigation, resulting in the arrest of four people, involved the Garda Síochána, customs and the Criminal Assets Bureau in the south and the PSNI and HM Customs in the North.
In an operation spanning six counties in the south, gardaí and customs seized 143,000 litres of laundered fuel, including 95,000 litres at a plant in Co Monaghan.