A crackdown on Vehicle Registration Tax (VRT) offences in border counties has been launched by the Revenue Commissioners.
Customs checkpoints have begun which will focus on VRT fraud committed through the use of foreign registered number plates.
Last year Revenue challenged 23,986 vehicles and 1,589 cars were seized for VRT offences.
"We maintain a focus on VRT offences throughout the year but at regular intervals we undertake 'blitz' style operations which are high visibility" said Revenue Commissioner Liam Irwin.
"The focus of this specific campaign is Irish residents illegally driving foreign registered cars. The rules are very clear and people who attempt to evade VRT will face the consequences", added Mr Irwin.