The trial of Mark Bridger, who is accused of murdering missing schoolgirl April Jones, is due to begin on 29 April.
Mr Bridger, 47, denies murder as well as charges of abduction and intending to pervert the course of justice.
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Whilst it should be drier than Wednesday, some rain is still expected.
It will stay largely cloudy tonight and there will be some further rain around, with central parts perhaps staying driest.
ITV Wales understands the reason for the inquiry call stems from concerns raised at the end of 2016 over a former healthcare support worker.