Dyfed Powys Police say they are not looking for anyone else in connection with the deaths of a that a mother and daughter who were found dead at their home in Builth Wells on Monday.
In a statement the force said they do not believe they died from carbon monoxide poisoning.
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One-year-old sheepdog Nell was stolen from a farm on the outskirts of Dolgellau.
Police are investigating an allegation that a young child was approached by a stranger in Llanelli.
An unsettled few days are in store, with rain and wind expected.