President Trump renewed his call for the courts to approve his executive order banning travel from six Muslim-majority countries Saturday amid reports of a "major incident" in London Saturday night.

"We need to be smart, vigilant and tough. We need the courts to give us back our rights," Trump tweeted Saturday evening. "We need the Travel Ban as an extra level of safety!"

We need to be smart, vigilant and tough. We need the courts to give us back our rights. We need the Travel Ban as an extra level of safety! — Donald J. Trump (@realDonaldTrump) June 3, 2017

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While the Trump administration and the U.K. have not yet called the incident a terrorist attack, Prime Minister Theresa May has released a statement saying the incident was being investigated as a "potential act of terrorism."

Trump earlier retweeted a Drudge Report post calling it a "new terror attack."

Trump's tweet comes just two days after his administration sent a request to the Supreme Court to reconsider the legality of his travel ban, which has been struck down by two federal courts in various incarnations. The Trump administration announced that it "strongly disagrees" with a federal appeals court decision refusing to reinstate the ban.

In a second tweet, Trump pledged the United States' support for the citizens of London.

Whatever the United States can do to help out in London and the U. K., we will be there - WE ARE WITH YOU. GOD BLESS! — Donald J. Trump (@realDonaldTrump) June 3, 2017

Trump's revised order banned citizens of Iran, Libya, Somalia, Sudan, Syria and Yemen from entering the United States for 90 days, and temporarily suspended the refugee program, while the government implemented a stricter visa screening process.