The suspect, 37, is wanted on a European Arrest Warrant by the authorities in Lithuania for questioning about the death of a man in 2005.
He was arrested after an operation at a house in Causanagh Road, Loughgall, Co Armagh.
The appeal for information to locate and apprehend the suspect was featured UK-wide on the BBC Crimewatch programme in February.
He has been taken to Lurgan police station to allow the arrest warrant to be processed.
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