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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Carole Ann Denby, who died in 2014, claimed the screw was left in her ankle after surgery in 2006.
A survey for the Welsh Government shows that people living in Blaenau Gwent are the least satisfied with their area as a place to live.
The rainy and unsettled conditions mean pollen levels will be low today but will go up to moderate for Thursday and Friday.