A Czech man claims he’s the rightful heir to paintings worth millions that once belonged to a Jewish cabaret performer who was killed by the Nazis — and wants auction house Christie’s to reveal what it knows about the art’s current location and owners.

Milos Vavra is an heir to Franz Friedrich “Fritz” Grünbaum ‘s art collection, he said in a Manhattan Supreme Court filing asking a judge to force Christie’s to share the information.

Before he was killed in January 1941 at the Dachau Concentration Camp, the Nazis forced Grünbaum, 60, to sign a document giving his wife the authority to transfer his property. 6

The Nazis then stole his art collection, which included works by Austrian impressionist Egon Schiele, Vavra said in court papers. 6

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Christie’s has previously sold

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