United Left Alliance TD Clare Daly has admitted she was stopped by gardaí and breathalysed last night.
The North Dublin deputy said she had been visiting family on the south side of the city when she took a wrong turn and was stopped by gardaí.
She said she was breathalysed and was awaitingt the result of a sample to assess the level of alcohol in her system.
Ms Daly admitted to having a hot whiskey that evening for medicinal reasons, and said if she was over the limit it would be a very serious matter.
Gardaí are awaiting test results and no charges have been brought against Deputy Daly.