Gardai in Donegal yesterday evening carried out a number of searches at Teelin Pier near Sliabh League.
The well-known tourist location has been closed all week as gardai carry out searches for a man they believe to missing.
The road to Teelin Pier, which is about a kilometre away from Sliabh League was closed yesterday.
It’s understood that the Garda Water Unit carried out searches at the pier yesterday evening.
A man in his mid 60s originally from Northern Ireland is understood to have been the victim of a serious assault in the area over the weekend.
The search began on Monday last following a tip-off that a person had been seriously assaulted.
Two people, a man in his 30s and a woman in her 20s, were arrested and interviewed abut the allegations.
However, both were released on Tuesday evening without charge.
A car owned by the male suspect in the case was seized and was examined by forensics officers.
It is understood that splatters of blood were present in the car and samples have been taken for analysis.
Forensics officers also sealed off a house in the Killybegs area and also searched that premises as part of their investigation.
There is local speculation that the Sliabh League Mountains could be reopened to the public later today.
Garda Commissioner Drew Harris says this is being treated as a serious crime: