A man in a wig was detained after throwing a piece of cake at the Mona Lisa

A man who seems to have been disguised as an old woman in a wheelchair threw a piece of cake at the Mona Lisa in Paris. 

Video posted on social media shows security guards at the Louvre Museum escorting the man away Sunday as he spoke in French about the planet. 

"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," he says, according to The Associated Press. 

Another video showed someone clearing the cake off the glass protecting the Mona 

Lisa, as onlookers held up their phones to film the incident's aftermath. 

The 36-year-old man was detained and sent to a psychiatric unit, according to the AP.