A diesel laundering plant in Co Monaghan, just outside Dundalk, has been raided by Customs Officers and the Gardaí.
The plant at Drumboat, Inniskeen, Co Monaghan – close to the borders with Louth and Armagh – is reported by RTÉ to have had the capacity to launder 20 million litres of diesel a year, with the potential loss of €10m to the Exchequer.
It is suspected that the plant was operating for more than a year.
A 42-year-old male was arrested following the overnight operation in relation to breaches of environmental waste legislation.