Shem ap Geraint, who lives in Pennal in Gwynedd, tells us that - when the emergency services began to evacuate the village - "it took a while to set in that there was a real threat".
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The man and woman who were found dead this morning on a Cardiff street were stabbed. Warning: Graphic content.
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A 20-year-old man from Gwent has been arrested after a man and woman were found dead on a Cardiff Street. Warning: Graphic Content