Gardaí in Donegal, with the assistance of the Coast Guard recovered a body from the water at Slieve League earlier this morning.
The body has since been removed from the scene and taken to Letterkenny University Hospital.
The State Pathologist has been notified and a post-mortem will take place in due course.
An incident room has been established at Ballyshannon Garda station under the direction of a Senior Investigating Officer.
Investigating Gardaí continue to appeal to any persons travelling in the vicinity of Killybegs/Slieve League between the afternoon of Saturday 24th June 2023 and the evening of Sunday 25th June 2023 who observed any activity which drew their attention to come forward.