In National Treasure, Nicolas Cage played a guy who hunted down rare historical artifacts, but life is imitating the movies now that the actor has agreed to hand over a rare dinosaur skull to the Mongolian government after the fossil was confirmed to have been stolen.

According to Reuters, the office of Preet Bharara, the U.S. attorney in Manhattan, filed a civil forfeiture complaint last week to take possession of the Tyrannosaurus bataar skull that Cage purchased for $276,000 in 2007 from a Beverly Hills gallery, reportedly outbidding Leonardo DiCaprio for the skull.

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While the lawsuit did not specifically name Cage, the actor’s publicist confirmed that he is indeed the owner of the skull, and he has voluntarily agreed to relinquish the skull after learning it was taken illegally from Mongolia.

A relative of the more famous Tyrannosaurus rex, the Tyrannosaurus bataar lived approximately 70 million years ago, and its remains have only been found in Mongolia.