French media report that the woman was attacked by three men.
An Irish rugby fan has allegedly been abducted and raped in France.
According to French media, the 37 year old woman was attacked by three men last night near her accommodation in Bordeaux, where Ireland's opening Rugby World Cup match took place.
She was taken to hospital in Bordeaux and has been referred to a victim support group.
Police are reportedly searching for the three men, while the Bordeaux public prosecutor's office has opened an investigation.
Gardaí say members currently deployed in France are liaising with local authorities in relation to "an alleged incident", adding that the investigation is a matter for the French police.