The J. Paul Getty Museum agreed to return 26 antiquities to Italy on Tuesday but declared an end to negotiations with Italian officials over 20 other objects, citing an unacceptable ultimatum.

The Getty also offered to transfer title of its prized statue of Aphrodite to Italy while both sides continued to investigate its origin, but it refused Italy’s insistence that any deal include another 2,500-year-old statue, a bronze figure of an athlete that is one of the hallmarks of the museum’s collection.

Meanwhile, as talks broke down with Rome, the Getty faced a new legal challenge in Greece. An Athens prosecutor announced he had recommended criminal charges be filed against the museum’s former antiquities curator Marion True for her role in buying an ancient funerary wreath allegedly looted from Greece.

Among the 26 objects the Getty agreed to return to Italy are several other masterpieces on display, including a 300 B.C. marble sculpture depicting two mythical griffins; a 300 B.C. ceremonial water bowl with a scene on its interior of sea nymphs bearing the weapons of Achilles; and a 100 A.D. marble statue of Apollo.