Got it..... Belphegor, Phantom of the Louvre from 2001
A rare collection of artifacts from an archeological dig in Egypt are brought to the famous Musée du Louvre in Paris. While experts are using a laser scanning device to determine the age of a sarcophagus, a spirit escapes and makes its way into the museum's electrical system. Museum curator Faussier (Jean-Francois Balmer) brings in noted Egyptologist, Glenda Spencer (Julie Christie), to examine the findings, and she announces that the mummy inside the coffin was actually the evil spirit Belphegor.
Meanwhile, Lisa (Sophie Marceau), a young woman who lives across the street from the museum, follows her runaway cat into the Louvre after closing time. She accidentally receives an electrical shock that transfers the stray spirit into her body. Soon Lisa is disguising herself as Belphegor and making off with the rare Egyptian treasures on display at the museum, convinced that they are rightfully hers. When Belphegor proves more than a match for the Louvre's security forces, renowned detective Verlac (Michel Serrault) is brought out of retirement to find out why the museum's Egyptian collection has been shrinking.
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