Two men have been arrested in Dundalk, Co Louth, after gardaí carried out a search operation targeting criminal and subversive activity.

Gardaí say the operation, which was carried out in the early hours of Thursday morning, is not directly related to the investigation into the murder of Detective Garda Adrian Donohoe.

Searches were conducted of various properties at six locations in Dundalk.

The two men, one in his 30s and one in his 70s, are being detained at Drogheda Garda Station.