People gather to cool off at the World War II Memorial in Washington, D.C. on July 5, 2023. the memorial was vandalized Thursday with graffiti and bubbles. File Photo by Bonnie Cash/UPI | License Photo

Aug. 13 (UPI) -- A section of the World War II Memorial in Washington, D.C. was vandalized Thursday, with red graffiti and mountains of soapy bubbles.

The bubbles were in and around the fountain at the memorial, which is on the National Mall. The graffiti spelled out "Clean hands diary $," and red and green paint was thrown on some granite stonework.

"The vandalism that occurred is an utter disgrace and will not be tolerated," the Department of the Interior said in a statement. "Our U.S. Park Police are on the scene and the investigation is ongoing. The public should know we will find the person responsible for this disgusting act."

The nonprofit Friends of the National World War II Memorial, which is dedicated to preserving the memorial, said it was "deeply disturbed" by the incident.