King Charles has landed in the US for the start of his four-day state visit amid a tense security atmosphere after Donald Trump was targeted by a gunman.

Charles, joined by the Queen, touched down at the Joint Base Andrews air base in Maryland, a short distance from Washington, in the last few moments.

The royals are expected to head to the White House, where they will be welcomed by Donald and Melania Trump.

Here is what we know about the scheduled plans for the King and Queen in the United States.

Charles and Camilla are scheduled to be greeted by Mr Trump and first lady Melania Trump at around 4.15pm local time (9pm BST) at the White House’s south portico. The heads of state will join together for a private afternoon tea in the Green Room on the state floor.

White House press secretary Karoline Leavitt has said the “Democrats’ obstruction” of funding to the Department of Homeland Security is impacting the Secret Service’s capability to deal with threats.

She has said that the funding should be considered a “national scandal”.

First Lady Melania Trump has led all of the preparations relating to King Charles’ and Queen Camilla’s visit to the US this week.

Press secretary Karoline Leavitt has returned from maternity leave earlier to deliver the press conference today.

She paid tribute to the “special relationship” between the US and UK.

White House press secretary Karoline Leavitt is due to speak at a briefing to press ahead of King Charles’ visit.

We will bring you the key updates. You can follow a live stream of the press conference below.