DETROIT — A 12-year-old visitor to the Detroit Institute of Arts stuck a wad of gum to a $1.5 million painting, leaving a stain the size of a quarter, officials say.

The boy was part of a school group from Holly that visited the museum on Friday, officials say. They say he took a piece of Wrigley's Extra Polar Ice gum out of his mouth and stuck it on Helen Frankenthaler's "The Bay," an abstract painting from 1963.

The museum acquired the work in 1965 and says it is worth about $1.5 million.

The gum stuck to the painting's lower left corner and did not adhere to the fiber of the canvas, officials told the Detroit Free Press. But it left a chemical residue about the size of a quarter, said Becky Hart, assistant curator of contemporary art.

The museum's conservation department is researching the chemicals in the gum to decide which solvent to use to clean it. The museum hopes to make the repair in two weeks and will keep "The Bay" on display in the meantime, she said.

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

Holly Academy director Julie Kildee said the boy had been suspended from the charter school and says his parents also have disciplined him.

"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," said Kildee.

I hope the kid was taught some lessons in how to behave better in public. I certainly wouldn't be impressed if I caught someone doing that - it's bad enough that people drop gum on the floor outside and the rest of us end up walking in it!

I cannot believe that some smarty pants would do this. What the heck was he thinking. Also I would like to know the parents reactions to this. I know that my kid would not even attempt to do this. I have taught him better than that. what was the reason given by the kid does anyone know.