Officials from the Museum of Fine Arts are investigating after they discovered spray painted images of Homer Simpson and other graffiti on the exterior walls of the building, as well as on the base of the statue that greets visitors at the main entrance.

A groundskeeper who asked not to be identified said she was “bummed” when she walked around the art museum on Friday morning and found the graffiti, which included phrases like “tell the truth” and Homer Simpson’s face, on the outside of the Japanese Garden, the front and back entrance to the gallery, as well as on the foundation of a prominent statue, called “Appeal to the Great Spirit,” which depicts a Native American riding atop a horse that welcomes guests coming in from Huntington Avenue. The actual statue was not damaged.