London Mayor Sadiq Khan has suggested that U.S. President Donald Trump should not be welcomed to the U.K. because his policies are incompatible with British values, as a planned state visit approaches. The mayor’s comments follow criticism from Trump on Twitter over Khan’s response to a terror attack Saturday that left seven people dead in the British capital.

Speaking to Britain’s Channel 4 News on Monday, Khan said the U.S. President was wrong about “many things.” According to the Guardian, he added that he doesn’t think Trump should be welcomed to the country.

“I don’t think we should roll out the red carpet to the President of the U.S.A. in the circumstances where his policies go against everything we stand for,” he said.

President Trump criticized Khan on Sunday after the mayor told Londoners that an increased police presence on the streets was “no cause for alarm.” Trump misleadingly suggested that Khan was downplaying the act of terrorism, which saw a van crash into pedestrians on London Bridge before three men exited the vehicle and attacked several people in nearby Borough Market.

After the mayor’s office contextualized Khan’s remarks, Trump went on the offensive again, tweeting on Monday that the explanation was a “pathetic excuse.”

Read more: President Trump’s Attack on London Mayor

Prime Minister Theresa May told British tabloid The Sun on Tuesday that even though Trump was “wrong in what he said about Sadiq Khan” his official state visit to Britain will still go ahead. “The relationship with America is our deepest and most important defence and security relationship” she told the newspaper. “Having said that, I think Donald Trump is wrong in what he said about Sadiq Khan, in relation to the attack on London Bridge.”

Trump’s attack on Khan has drawn sharp criticism not in the U.K. but also from American officials. The acting U.S. Ambassador in London, Lewis Lukens, issued a statement on Twitter offering praise and support for Khan: “I commend the strong leadership of the @MayorofLondon as he leads the city forward after this heinous attack,” it read.

The U.S. Conference of Mayors, which represents 1,400 communities across the country, also sent Khan an unequivocal message of support.

“[Khan] has risen above this crisis of death and destruction, as mayors continue to do, to alleviate fear, to bring comfort to his people of London and to give support to the first responders who continue to protect, defend and provide emergency care to his people of London,” the statement read. “Thank you, Mayor Khan, for your leadership during this crisis.”

[Guardian]

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