The United States Secret Service said Sunday that agents shot and killed an armed man after he breached a secure perimeter at President Donald Trump's Mar-a-Lago resort in Palm Beach, Florida. "An armed man was shot & killed by US Secret Service agents & @PBCountySheriff after unlawfully entering the secure perimeter at Mar-a-Lago early this morning," agency spokesman Anthony Guglielmi wrote on social media. Trump and first lady Melania Trump were at the White House in Washington, DC, during the incident. The security detail at the estate noticed the intrusion at 1:30 a.m. (0530 GMT/UTC) on Sunday, Sheriff Ric Bradshaw of Palm Beach County said. A sheriff's deputy and two Secret Service agents confronted "a white male that was carrying a gas can and a shotgun," Bradshaw said. "He was ordered to drop those two pieces of equipment that he had with him at which time he put down th gas can, raised the shot gun to a shooting position.…