Mendoza, Argentina (CNN) The remains of an Australian university professor and her sister have been found buried at the home of a family relative in Argentina, days after they were first reported missing.

Authorities said Pirhya Sarusi and Lily Pereg, both Israeli nationals, had visited Sarusi's son Gil Pereg before their disappearance and were found interred at his property in the city of Mendoza on Saturday.

Gil Pereg, who lives in Argentina, has been charged with two counts of murder, according to a statement from the Argentine attorney general's office.

One of the corpses had three gunshot wounds and the other also had markings indicating a struggle, it said.

In an interview shortly before his arrest, Pereg told CNN affiliate Todo Noticias that authorities had told him nothing. He denied that anything illegal had happened in his house.

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