If you visited the Louvre on Sunday, you may have witnessed an unusual scene when a young man disguised with a wig stood up from a wheelchair and threw a slice of cake at Leonardo Da Vinci’s Mona Lisa painting.

According to witnesses and video of the event, the man threw the cake, which hit a glass barrier protecting the cake and also threw rose petals around. One person on Twitter even claimed that he “attempted to smash the bullet-proof glass,” before he threw the cake.

The second video shows a full shot of the culprit being escorted out of the Louvre, along with his disguise props of a dark wig and wheelchair. He was also yelling to the crowd in French. “Think of the Earth. There are people who are destroying the Earth. Think about it. Artists tell you, think of the Earth. That’s why I did this,” the 36-year-old protestor reportedly said.

The man was detained at a police psychiatric unit to be evaluated, and his attempt to damage the painting is currently under investigation. The Louvre confirmed that the drive-by cake attack happened on Sunday, noting that the man used the museum’s policy to allow disabled people to the front of the crowd to get close to the painting, and snuck in a piece of cake in his bag.

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