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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Results for constituencies across Wales are being announced. Find out the details for your area.
Turnout figures at Welsh constituencies are being released as concerns grow that they could be as low as 2003.
As votes are being tallied across Wales this evening, here are what some of our reporters are saying at counts up and down the country.