A man from the Wrexham area has been arrested on suspicion of the murder of Glynis Eileen Solmaz, 65, who was found dead in her home in Caia Park in the town on Wednesday.
North Wales Police says the man is in his twenties.
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Two people forced their way into a flat in Caerphilly and demanded the victim's car keys. He was assaulted and received cuts to his head.