An official from the U.S. Secret Service has confirmed the agency has spoken to the Trump campaign about his comments at a rally in Wilmington, North Carolina, Tuesday, which many saw as a call to assassinate his rival Hillary Clinton.

Donald Trump: “Hillary wants to abolish—essentially, abolish—the Second Amendment. By the way, and if she gets to pick—if she gets to pick her judges, nothing you can do, folks. Although the Second Amendment people, maybe there is. I don’t know.”

The official told CNN the Secret Service has had multiple conversations with the campaign over the comments. Donald Trump, however, is denying these conversations with the Secret Service have taken place, tweeting, “No such meeting or conversation ever happened.”