The Fermanagh arrests were in connection with the discovery of an explosive device found in Louth last month.
Belleek search in relation to terrorism investigation
The search follows others in Garrison, Enniskillen and Letterbreen at the weekend, in relation to the discovery of an explosive device in Co Louth.
Man arrested in Fermanagh on terrorism charges released
The arrest came following a search of a property in Letterbreen on Sunday, with police also search properties in Enniskillen and Garrision.
Fermanagh arrest and searches following explosive find
Searches were carried out in Letterbreen, Enniskillen and Garrison today following the discovery of an improvised device in Co Louth.