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
Vincenzo Peruggia to Italy with it. He kept it in his apartment in Florence, Italy but grew impatient, and was finally caught when he contacted Alfredo Geri, the owner of an art gallery in Florence. Geri's story conflicts with Peruggia's, but it was clear that Peruggia expected a reward for returning the painting to what he regarded as its "homeland". Geri called in Giovanni Poggi, director of the Uffizi Gallery, who authenticated the painting. Poggi and Geri, after taking the painting for "safekeeping", informed the police, who arrested Peruggia at his hotel. After its recovery, the painting was exhibited all over Italy