Argentinian officials might have found more art looted by the Nazis during World War II as they hunt down a famous painting in Buenos Aires.

The new works were discovered as officials searched for an 18th century masterpiece stolen from a Jewish collector by SS officer Friedrich Kadgien, who fled to Argentina after the war.

Kadgien's daughter Patricia and her husband Juan Carlos Cortegoso were placed under house arrest after the painting went missing from her home in Mar de Plata, near Buenos Aires.

The painting, Portrait of a Lady, by Italian master Giuseppe Ghislandi, was missing for 80 years before it was spotted on a real estate website last month by Dutch journalists.

Prosecutors said they raided the homes of several of Kadgien's relatives as part of the search and discovered two paintings from the 19th century in the home of Kadgien's sister.