U.S. President Donald Trump, has called for the White House to be transformed into the most secure presidential residence ever built in Washington after a gunman was killed by Secret Service agents outside the complex on Saturday evening, marking the second major security incident at the White House in just one month.

“This event is one month removed from the White House Correspondents’ Dinner shooting, and goes to show how important it is, for all future Presidents, to get what will be the most safe and secure space of its kind ever built in Washington D.C.,” Trump wrote on Truth Social shortly after the incident.

Trump also said the gunman had a violent history and a possible obsession with the White House, while praising Secret Service agents and law enforcement for what he described as their swift and professional response.

“Thank you to our great Secret Service and Law Enforcement for the swift and professional action taken this evening against a gunman near the White House, who had a violent history and possible obsession with our Country’s most cherished structure,” he wrote.