A tanker truck, which was seized by Revenue officials during a diesel laundering operation last week, has been stolen from inside the army barracks in Dundalk, Co Louth.

The incident took place at around 2 o'clock this morning, when it's understood a person broke into Aiken Military Barracks and drove the vehicle at high speed through the locked gates.

The tanker is still loaded with several thousand litres of laundered diesel - which were seized by Revenue in Co. Monaghan last Wednesday.

Gardaí in Dundalk have launched an investigation and are appealing for witnesses to come forward.