The 9/11 memorial sculpture in Heisler Park has been vandalized.
Artist Jorg Dubin discovered the damage to "Semper Memento" on March 9 when he went to polish the sphere that sits in the middle of the sculpture, according to police.
Dubin reported three small dents in the sphere and some surface scratches.
"The dents appear to have been made with a pointed metal object with some force as the metal surface is also gouged at the point of impact," Dubin said in his report.
Two of the dents appear near the top on the plaque side of the sphere; the other is about halfway down on the left, according to the report.
"All this damage was not there the last time I cleaned the sphere about two weeks ago," Dubin said in the report. "This had to be intentional as the surface of the sphere is very hard and would require some force to damage it."