One of the largest quantities of diesel oil laundering sludge has been discovered in the north of the county.
45,000 litres of the toxic waste was dumped on a lay-by on the M1 northbound, near to junction 20 Jonesborough and the Carrickdale Hotel.
Louth County Council are dealing with the problem, the latest in a series of dumps throughout the last few years.
Anyone with information on the incident is asked to contact the council or their local Garda Station.
