King Charles III is "being kept fully informed of developments" after a shooting incident at the White House Correspondents' Dinner, Buckingham Palace has said.

"A number of discussions will be taking place throughout the day to discuss with US colleagues and our respective teams to what degree the events of Saturday evening may or may not impact on the operational planning for the visit," it stated ahead of his trip to the US on Monday.

The King was "greatly relieved" to hear that Donald Trump, Melania Trump and all other guests had been unharmed, it added.

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The US president and first lady were evacuated from the Washington DC dinner after a man fired several shots while attempting to enter the venue.

US Acting Attorney General Todd Blanche said he was "very confident" the King will be safe during the four-day state visit, in which he will be accompanied by Queen Camilla.

He told NBC News' Meet The Press there was an "all-government approach" to ensure the country was safe and that the events of Saturday night showed the US security system worked.

Blanche added that the suspect will be charged in federal court on Monday and is believed to have been targeting Trump administration officials.

A senior government minister said earlier on Sunday that the King's state visit would have "appropriate security in place in relation to the risk".

Chief Secretary to the Prime Minister Darren Jones told the BBC's Sunday with Laura Kuenssberg programme that the government and Buckingham Palace had been in "close co-operation" with US officials before the trip.

"Further discussions will be taking place today ahead of next week," he said.