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The National Park Service says its crews are nearly finished scrubbing off the green paint from the Lincoln Memorial left last Friday by a vandal, but it’ll take a bit more time before the great monument is all cleaned up.

James Perry, who directs resource management for the National Mall, says there are still splotches of paint on underneath the right foot, left leg, and a chair arm of Daniel Chester French’s sculpture of Abraham Lincoln. The paint marks are the darkest hues of the splatter that was found Friday morning, making them the toughest to remove.

But the cleanup is going ahead, Perry said. “It’s pretty faint at this point,” he said.

Since the paint was first spotted, crews have been power-washing the affected spots on the monument using a water-based solvent. With the exception of a brief investigation when the paint was first sighted, the memorial has remained open to visitors, though the immediate area around the statue of the 16th president has remained closed off.

In addition to the Lincoln Memorial, three other D.C. landmarks were found to be splashed with green paint in the past week, including the statue of Joseph Henry, the first secretary of the Smithsonian Institution; a statue of Martin Luther at a church on Thomas Circle; and two areas of the Washington National Cathedral.

The Metropolitan Police Department arrested Jiamei Tian on Monday at the National Cathedral after she allegedly smeared green paint on the cathedral’s pipe organ and in one of its chapels. Tian, 58, has not been charged in connection with any of the other paint jobs, but D.C. Police Chief Cathy Lanier said earlier this week she believes the incidents are connected.

U.S. Park Police, who have jurisdiction over the Lincoln Memorial, have not made an arrest in connection to that act of vandalism.