The saga over the Lincoln Memorial Reflecting Pool took a turn as President Donald Trump said Tuesday that six people have been arrested over recent damage. The president’s troubled $14-million-plus rehabilitation project has become a visceral flashpoint over law enforcement, aesthetics and environmental concerns ahead of the country’s 250th anniversary celebrations.

In a social media post, Trump claimed without supporting evidence that there had been a “350-foot gash” in the paint as the administration faces a self-imposed deadline to fix the botched renovation before the nation’s 250th anniversary celebration next week. He has also said, including again on Tuesday, that the federal government would release images to substantiate his claim.

Trump pledged to beautify the century-old Reflecting Pool ahead of the anniversary celebrations, draining its water and having the bottom painted a color he dubbed “American flag blue.” But since the site was restored, its water has been plagued with algae bloom and pieces of the new coating appeared to be peeling off the bottom.

Trump, without evidence, has repeatedly blamed the peeling paint on vandalism.

“It was purposefully and criminally done, and somebody had to work very hard, probably in the dark of night, to create such a condition,” Trump wrote Tuesday, adding that another seven people were cited for allegedly damaging the pool.