A 12-year-old boy visits a Detroit museum with his school and decides to stick gum on a $1.5 million painting.

Museum officials tell the Detroit Free Press the boy took a piece of gum out of his mouth and put it on Helen Frankenthaler's 1963 painting, "The Bay."

Officials say gum did not adhere to the fiber of the canvas. However, assistant curator of contemporary art, Becky Hart, says the gum left a chemical residue about the size of a quarter.

The museum is researching the gum's chemical to decide how to clean the painting.

Hart says, "Our expectation is that the painting is going to be fine."

The boy has been suspended from Holly Academy and has been disciplined by his parents.

The school's director Julie Kildee says, "Even though we give very strict guidelines on proper behavior and we hold students to high standards, he is only 12 and I don't think he understood the ramifications of what he did before it happened, but he certainly understands the severity of it now."