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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Tammy Gunter was jailed for wrongly claiming tax credits by saying she was single - when she was secretly married.
Sally Anne Morris of The Parrot Inn said four people drove up to the pub on Saturday and stole a life-size cut-out of the happy couple.
Levels will remain moderate for today and tomorrow, but, with a risk of thunderstorms on Thursday, levels will drop to low.