The incident occurred in Dublin.
Gardaí are appealing for witnesses following the alleged sexual assault of a woman in her 30s on Christmas Eve.
The incident occurred on Tuesday, December 24 on the N81 Tallaght bypass near Jobstown between the hours of 9pm and midnight.
An appeal for witnesses of the alleged incident – particularly motorists travelling in the area who may have dashcam footage – has been issued.
Anyone with information is urged to contact Tallaght Garda station on 01 6666 000 or the Garda Confidential Line on 1800 666 111.
