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.
More top news
The men were assaulted with what police believe to be a knife.
Under current rules, both teams have to agree to the roof being closed, otherwise it stays open.
Carwyn Jones and Leanne Wood join forces to put forward an alternative plan for the UK's departure from the European Union