WASHINGTON (AP) — A former Olympian was indicted Thursday on a felony charge in what President Donald Trump has called vandalism of the Lincoln Memorial Reflecting Pool, where a renovation project he launched has been riddled with problems.

David Hearn, a former Olympic canoe racer, was indicted on a single count of property destruction in Washington, D.C., court.

District of Columbia U.S. Attorney Jeanine Pirro said Hearn ripped up recently installed sealant on the pool in “a deliberate act” that caused more than $1,000 in damage. She accused him of “forcefully and violently” pulling up the bottom liner “with both hands” and acting belligerently toward an employee who told him to stop.

“This is a case with tremendous evidence,” she said, adding that authorities have made about six other misdemeanor arrests.

In a statement, Democracy Defenders Fund co-founder Norm Eisen and Mary Dohrmann, senior counsel at Washington Litigation Group, said that they represented Hearn and that the charges were “outrageous and should be alarming to every American.” Eisen and Dohrmann construed the case as representative of “the misuse of government power against an ordinary citizen based on a concocted narrative.”

Hearn didn’t immediately return a phone call seeking comment. He previously told The Associated Press that he reached into the pool on June 19 to examine the newly peeled coating. He said he briefly touched a chunk that was still attached to the side of the pool, then let go shortly after a park worker told him to.

“I’m a curious citizen,” Hearn said in a telephone interview last month. “I reached down to see what it felt like. It was very rubbery.”

Hearn, 67, of Bethesda, Maryland, owned a company that made composite materials used to build watercraft.

Saying that he stopped by the pool during a 64-mile bike ride, Hearn said he was detained by National Guard troops and U.S. Park Police for five hours before being released.

Trump said last month that federal authorities made “multiple arrests” of people he accused of vandalizing the Reflecting Pool as he struggled to explain why the $16-million rehabilitation project he launched for the nation’s 250th anniversary seemingly backfired. Without providing any substantiation, he also said vandals dumped fertilizer into the pool and slashed the coating with a box cutter.

In subsequent days, National Guard members and Park Police patrolled the deck around the Reflecting Pool as Trump’s administration faced a self-imposed deadline to fix a botched renovation before the nation’s 250th anniversary celebration. Contractors and federal workers used chemicals and ozone nanobubbles to combat an algae bloom, and Trump has said that problems most likely require draining the pool again for liner repairs.

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Kinnard reported from Columbia, S.C.