Mona Lisa Béroud checked back with the Section Chief of the Louvre who confirmed that the "Mona Lisa" was not with the photographers. The Louvre was closed for an entire week during the investigation. French poet Guillaume Apollinaire came under suspicion and was arrested and imprisoned. Apollinaire implicated his friend Pablo Picasso, who was brought in for questioning. Both were later exonerated. Two years later the thief revealed himself. Louvre employee Vincenzo Peruggia had stolen the "Mona Lisa" by entering the building during regular hours, hiding in a broom closet, and walking out with it hidden under his coat after the museum
Louvre were remodelled under architects Louis Visconti and Hector Lefuel. The Louvre was damaged during the suppression of the Paris Commune. On 23 May 1871, as the French Army advanced into Paris, a force of Communards led by Jules Bergeret set fire to the adjoining Tuileries Palace. The fire burned for forty-eight hours, entirely destroying the interior of the palace and spreading to the museum next to it. The library of the museum and some of the adjoining halls were destroyed, but the museum was saved by the efforts of Paris firemen and museum employees. During the Third Republic (1870–1940) the