A woman has suffered a sex assault involving three men.
Gardai said the attack took place at about 3.20am near parkland beside the Newlands Road area of Clondalkin, Dublin.
The woman, in her early 30s, had a bike with her when she was set upon by the group.
Gardai said no arrests have been made but detectives appealed for anyone who may have information on the incident to contact them at Ronanstown Garda Station.
The scene of the attack was sealed off and the woman was treated in hospital.