A fuel laundering plant in County Tyrone capable of processing 25,000 litres of fuel per week has been discovered, Customs officers have said.
About 6,700 litres of diesel, a van and tanks were uncovered
About 6,700 litres of diesel, a van, tanks, pumps and filtration and storage equipment were removed by officers in Coalisland on Thursday night.
Head of Detection Colin McAllister said the annual revenue loss of the plant would be about £650,000.
"Customs have stopped a substantial amount of harmful diesel from damaging engines and affecting honest businesses," he said.
"If this sophisticated operation to illegally remove the chemical markers in duty-rebated fuel had not been shut down, it would have meant an annual revenue loss of around £650,000.
"People also need to be aware of the potential environmental damage that can be caused by waste products from the laundering process."