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Five people have reportedly been arrested for vandalizing Lincoln Memorial reflecting pool in Washington DC, with Donald Trump insisting repair work will begin “immediately”.

CBS News reporter Emma Nicholson tweeted on Sunday that an administration official told her five people had been arrested for vandalizing the pool and another five issued federal citations, bring the total number of police reports filed to 14, including one related to an alleged 250ft gash in the pool.

It has been plagued by algae blooms and peeling paint following the controversial recent renovation efforts for America’s 250th anniversary celebrations next month.

On Sunday, Trump said he had personally surveyed the damage. “Work will begin immediately on fixing the seriously vandalized Reflecting Pool,” Trump said in a Truth Social post on Sunday evening.

“I just inspected it, and could only say to myself, and those gathered around me, WOW, who would do such a thing?” the president added, without offering further details. He said the pool would “probably” be drained as part of the repair works.

Three-time Olympian David Hearn, who was apprehended, told the Washington Post that he had merely stopped by the pool to touch one of the peeling pieces of paint liner to see how it felt, when he was arrested by US park police on a misdemeanor charge.

Trump gave no details on any other apparent arrests and exact details of such apprehensions remained scant on Sunday afternoon.

Meanwhile, the US attorney for the District of Columbia, Jeanine Pirro, said on Sunday afternoon that citations for vandalism had been issued and people caught vandalizing the 2,000-ft-long reflecting pool will be fully prosecuted.

“Anyone who is in a position of vandalizing or attempting to vandalize will face the criminal justice system in DC,” ‌Pirro told Fox News’s Sunday Briefing. Anyone adding products to the pool that can generate algae could face more severe charges, Pirro added, but did not offer statistics or specific details of arrests.

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In other developments:

• Donald Trump threatened to ⁠resume war with Iran even as his vice-president JD Vance met Iranian officials to begin peace talks in Switzerland. Also overshadowing negotiations in Bürgenstock was Tehran’s announcement it had again closed the strait of Hormuz, a threat made because of ongoing Israeli strikes on southern Lebanon.

• US political figures from left and right have voiced fresh objections to Trump’s provisional deal with Iran. Outgoing Republican senator John Cornyn posted a line on X from a Wall Street Journal article on how rogue regimes evade US economic warfare. Senior Democratic figure Susan Rice added to her recent description of the US-Iran deal as a “horrific surrender” by Trump, calling it “egregious” because “so many concessions were granted up front”.

• At least seven people have been killed and dozens injured in several shootings in Chicago since Friday, police said, with Trump again calling for military intervention in the midwestern city. In a post on Truth Social, the president questioned why Illinois’s governor, JB Pritzker, had not welcomed military deployment.

• Nine months after Trump ordered an anti-crime taskforce on to the streets of Memphis, a small band of dedicated observers is attempting to monitor its actions. They have alleged widespread intimidation by agents, who stand accused in a lawsuit filed by the American Civil Liberties Union of Tennessee of having tailed cars, surveilled homes and even “falsely arrested” one community observer.

• Public health resources across the US are failing to keep pace with the rapid growth of online gambling, problem health advocates warned, after Trump endorsed the controversial nationwide surge of prediction markets.