It had been sold to the Metropolitan Museum of Art in New York City by a global art trafficking network, which used fraudulent documents, officials said.
The coffin, which dates back to the 1st Century BC, was bought by the prestigious museum for $4m (N1.4 billion) from a Parisian art dealer.
It was first shipped to Germany where it was restored before being transported to France.
The museum was given a forged 1971 Egyptian export licence, among other false documents, prosecutors told US local media.
Officials said the grand and ornate coffin had been buried in the country’s Minya region for 2,000 years before it was stolen in 2011.