GLENDALE, Ariz. - Federal law enforcement agencies are monitoring for threats ahead of Charlie Kirk's funeral in Arizona this weekend, according to a new report.

They are "tracking several threats of unknown credibility," according to a law enforcement bulletin obtained by ABC News.

"Violent extremists and unaffiliated lone offenders may view the memorial service or related events as attractive attack targets due to the attendance of these individuals, other senior U.S. government officials, state and local government officials, and political activists and due to major international media attention," the memo reportedly says.

RED HATS AND CHANTS OF 'USA' MARK VIGIL HONORING SLAIN CONSERVATIVE LEADER CHARLIE KIRK: 'ACT'

Federal authorities have long warned about potential lone

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