Just now Sean Coughlan, royal correspondent,, Washington DC and Maia Davies Getty Images King Charles III is set to arrive in Washington DC on Monday, where he will be hosted by US President Donald Trump A final decision confirming that King Charles and Queen Camilla's state visit will go ahead is expected later on Sunday, the BBC understands, after a shooting incident in Washington DC raised security concerns. The UK government has to be satisfied, but all indications suggest the state visit will begin as planned on Monday, possibly with some minor adjustments to more public-facing events. Donald Trump also seems to expect the trip to go ahead, telling Fox News: "King Charles is coming, and he's a great guy." Buckingham Palace said the King was "greatly relieved" to hear that the US president, Melania Trump and other guests at the White House Correspondents' Dinner had been unharmed.…