Forensic experts are to carry out tests on bones found in a house believed to have been the summer retreat of former Paraguayan military ruler, General Alfredo Stroessner.
Squatters came across the bones when they occupied the property near the city of Ciudad Del Este last week.
The bones were found under a bathroom and are thought to have belonged to four people.
459 people were killed or disappeared, according to the Commission for Historical Memory when General Stroessner ruled Paraguay from 1954 to 1989.
He was deposed in a coup in 1989 carried out by another General, Andrés Rodríguez. After being ousted from power, he took refuge in Brazil, where he died in 2006.
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