Leitrim Gardaí arrested a motorist earlier this week following the discovery of €16,000 worth of cocaine in his vehicle.
The man in his 30s was stopped by Carrick-on-Shannon Gardaí on Sunday and subsequently failed a roadside oral fluid test for Cannabis and Cocaine.
Following a search of the vehicle, Gardaí discovered a large amount of controlled drugs, which will are currently undergoing analysis.
The driver of the vehicle was arrested and a file is to be sent to the Director of Public Prosecutions.
Leitrim Gardaí are urging motorist never to drive under the influence of drugs.