Trump touts his blocked travel ban during ongoing police operations in London

US President Donald Trump touted his proposed travel ban in response to severalongoing police operations in London, where multiple casualties were reported Saturday night.

"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," Trump tweeted, before authorities in London could confirm full details of the incidents.

British police are investigating an incident that occurred on London Bridge Saturday evening, after witnesses reported that a vehicle mounted the pavement and mowed down pedestrians.

Police then responded to reports of gunfire and stabbings at Borough Market, as well as reports of a third incident in the Vauxhall area.

The US Justice Department last week asked the Supreme Court to reinstate Trump's executive order banning travel to the US from six majority-Muslim countries while it appeals a lower-court ruling that upheld a nationwide block on the ban last month.

The DOJ's petition asks the high court's nine-justice panel to rule on the legality of Trump's order. In a May ruling halting the order, the 4th US Circuit Court of Appeals argued that the travel ban "drips with religious intolerance, animus, and discrimination," citing in part Trump's campaign-trail rhetoric that called for a "total and complete shutdown" of Muslims entering the US.