Federal investigators returned a 500-year-old document signed by Hernán Cortés, the Spanish conquistador who captured the Aztec empire, to Mexico.

Nearly five centuries after Spanish conquistador Hernán Cortés signed it and decades after someone swiped it from Mexico’s national archives, the FBI returned a priceless manuscript page to Mexico on Wednesday.

The FBI has returned a 500-year-old stolen document signed by Spanish conquistador Hernán Cortés to Mexico. The manuscript page was penned in 1527 and is one of 15 pages thought to have been swiped from Mexico's national archives between 1985 and 1993, the US investigatory agency said.