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Police investigating alleged dissident republican activity have arrested a fifth person.
The 45-year-old man was arrested in Cookstown on Saturday. Earlier, three men aged 33, 44, and 46, and a 37-year-old woman were detained in Toome, County Antrim, and Pomeroy, Carrickmore and Omagh in County Tyrone.
A number of cars were seized during a series of searches.
The five people were taken to Antrim PSNI station for questioning.