Magistrates in Prestatyn granted officers a 36-hour extension this morning to question a 46-year-old man from Gwynedd on suspicion of Caroline Gowing's murder.
He is known to frequent the New Brighton area and is known to Ms Gowing, who disappeared last Friday.
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The officer fired after the boy, who is being treated in hospital, failed to raise his hands when told to.
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A weather warning is in place across the south-east with heavy rainfall expected. Elsewhere there will be plenty of sunshine around.