The Lincoln Memorial was vandalized overnight with green paint in Washington. D.C. The memorial will be closed to the public until the Lincoln statue is cleaned.

Police were alerted to the scene by a patrol officer just before 1:30 a.m. and found green paint splattered on the leg and base of the statue, U.S. Park Police Capt. Steven Booker told CNN Friday.

No messages, words, or symbols were written or discernible on the monument, according to the National Park Service. No motive has been deduced.

Park Police will review the security camera video for evidence and to determine a suspect.

Capt. Booker says the paint spill "appears intentional based off of the splatter," The Huffington Post reports 

The memorial on the National Mall will be closed until the National Park Service cleans the statue. The NPS said that they are using citrus-based cleaners and power washers to clean the paint, CBS News reports.

NPS spokeswoman Carol Johnson said the paint "is not permanent...it can be cleaned," adding she's "hopeful" the whole monument can reopen to the public sometime on Friday.

"It breaks my heart that somebody would do this," Johnson said. "This is devastating to us."

The memorial, one of the most popular sites on the National Mall, was dedicated in 1922 to the nation's 16th president, The Huffington Post reports.