Gardaí have launched an investigation after a lorry, believed to be carrying laundered diesel, was involved in a crash on the Louth/Armagh border.
It happened at Sky-hill, near Dundalk at around 10am this morning.
Gardaí were called to the scene where they found a cattle trailer and tractor unit had hit a hedge.
The alarm was raised after gardaí noticed fluid seeping from the trailer.
Customs officers and gardaí are at the scene.