Three men and a woman have been arrested by customs officers in Northern Ireland as part of a cross-border investigation into fuel smuggling.
Customs officers from the Revenue Commissioners along with the PSNI and gardaí were also involved.
Raids were carried out on commercial and domestic premises in Omagh, the border areas of Derrylin in Co Fermanagh and Ballyconnell in Co Cavan.
Customs officers in Northern Ireland say they took possession of 18,000 litres of home heating oil and 8,500 litres of green diesel together with a tanker.
£20,000 in cash was also seized in the operation.
