Gardaí have carried out planned searches as part of the ongoing investigation into the murder of Detective Garda Adrian Donohoe in January.
Det Garda Donohoe was shot dead on 25 January during an armed raid on the Lordship Credit Union in Bellurgan, Co Louth.
Local detectives and specialist units were involved in the searches at Faughart near Dundalk.
Gardaí have renewed their appeal to members of the public.
People are being asked to come forward with any information they may have in relation to the murder.