Two people have been arrested over an alleged assault in the Slieve League / Killybegs area of Donegal.
Gardai have launched an appeal for information.
A major Garda operation is ongoing in the area with a house also sealed off in the Killybegs area yesterday.
Gardai believe that the alleged assault took place over the course of Saturday and Sunday.
Two people, a man in his 30s and a woman in her 20s, have been arrested following the incident which is understood to have occurred at Slieve League.
They are currently detained under Section 4 of the Criminal Justice Act at Garda stations in Co. Donegal.
Public access to Slieve League remains closed to facilitate the investigation.
Gardaí are appealing to any person who may have information to contact them.
Any road users who were travelling in the vicinity of Slieve League between Saturday evening and Sunday evening and who may have camera footage (including dash cam) is asked to make this available to investigating Gardaí.
Anyone with information can contact Ballyshannon Garda Station on 071 985 8530, the Garda Confidential Line on 1800 666 111, or any Garda station.
