Meanwhile, British Foreign Secretary Boris Johnsonsaid on Tuesday he saw no reason to cancel Donald Trump´s state visit to Britain after the USA president criticised Mayor Sadiq Khan´s response to the London Bridge killings.
"When you have a close relationship it's no different from when you have a close mate". "You need to be about 9 years old in your social development to understand when your neighbor, friend, brother, sister - which is what the British are to us - have suffered a great tragedy, the only decent response is to say, 'I'm terribly sorry and how can I help'".
When this error was pointed out to Trump by Khan's office, the US President remained defiant.
In the wake of Saturday night's terror attack on London Bridge and Borough Market, which left seven people dead and 48 injured, Trump and Khan have been trading barbs.
Mr Khan has refused to be drawn into responding to the President saying he simply hasn't got the time given the attack.
Khan said he had been too busy dealing with the fallout from the attack to respond directly to the tweet.
Almost two million people signed an online petition seeking to stop Trump making a state visit after he was invited during Prime Minister Theresa May's trip to the U.S. in January.
It is not the first time a member of the Trump family has criticised the Mayor of London for his stance on security and terrorism.
"Of course we should carry on talking to Donald Trump, the United States of America are close allies of ours".
U.K. Foreign Secretary Boris Johnson was quick in saying that the invitation to the US had been issued and accepted.
Khan, a human rights lawyer and practicing Muslim hails from Pakistan, has challenged repeatedly Trump's calls to ban Muslims or people from Muslim countries from entering the U.S, saying the president has a "rude view of Islam".
He was referring to a bombing in NY and stressed the importance of cities being well-prepared for such attacks.