Federal authorities are tracking “several threats of unknown credibility” against people planning to attend a Sunday memorial service in Arizona for Charlie Kirk, the conservative activist who was fatally shot last week in Utah.

Threats to President Trump, Vice President Vance and members of Kirk's family were among those being investigated, two law enforcement sources confirmed to The Hill's sister network, NewsNation. The threats were neither verified nor conclusively credible, but threats of unknown credibility must still be thoroughly investigated, the sources said.

The details about potential threats emerged in a law enforcement assessment circulated by federal agencies, including the FBI, Department of Homeland Security (DHS) and Secret Service.

The FBI declined to comment, while DHS and Secret Service have not responded to The Hill's........

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