A large quantity of oil laundering waste has been illegally dumped in Inniskeen.
The discovery at Gorteen is currently being dealt with by Louth County Council.
It is reported that two large plastic cubes containing approximately 2,000 litres of toxic material, have been found at the site, which is located just off the N53 and right along the Monaghan border.
This is the first case of illegal fuel dumping discovered this year. Last year there were 103 dumping incidents in the county, which cost the local authority €686,000.