Gardaí are investigating three separate alleged sexual assaults that occurred in the past 24 hours.
Two young women claimed they were attacked in Dundalk while a middle-aged woman said she was assaulted in Tralee, Co Kerry.
One young woman, believed to be in her early twenties, claimed she was dragged down a laneway on Bridge St in Dundalk at about 1am this morning.
A man has been arrested and is being questioned by gardaí.
In a separate incident in the same town, a teenage girl claimed she was assaulted at about 12.30am.
Meanwhile, a middle-aged woman claimed she was attacked in a field on the outskirts of Tralee town at about 9.30pm last night.
Gardaí have spoken to the woman and are continuing their investigations.