Three people remain on police bail more than two months after the discovery of a man's body at a property near Builth Wells.
Dyfed-Powys Police discovered the body at the man's home address following a report concerning his welfare.
The identity of the man is not being released at the moment, the force said.
A 28-year-old woman and a 43-year-old man, both from Rhayader, were arrested on suspicion of preventing lawful and decent burial of a body.
A 60-year-old woman from Builth Wells was also arrested on suspicion of assisting an offender, after the body was found on August 13.
A Dyfed-Powys Police spokeswoman said: "The three people who were arrested remain on police bail. We are not releasing details about the deceased at this time."
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