The man was arrested in Ipswich this morning.
The Serious Organised Crime Agency says it is the first arrest as part of Operation Pallial, which last November started investigating recent allegations relating to historic child abuse in North Wales.
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During a renovation project, Victorian mosaics were found underneath a carpet and a wall memorial dated 1732 was discovered.
A bright and frosty start, with the risk of some icy patches. However cloud will soon spill in from the northwest,
Wales woke to another frosty morning on Saturday after temperatures plunged.