(NewsNation) — A memorial for assassinated conservative activist Charlie Kirk will be held on Sept. 21, a person familiar with the details told NewsNation.

Turning Point USA, Kirk's conservative organization, will hold the memorial at State Farm Stadium outside Phoenix, where the Arizona Cardinals play. Details on public attendance are unclear, and the person did not specify a funeral date.

Kirk's casket arrived Thursday in his home state aboard Air Force Two, accompanied by Vice President JD Vance.

There will be private events in the days prior, including a prayer vigil in Washington, D.C. on Sunday.

Members of Congress and other political figures will hold a memorial service and prayer vigil this day at 6 p.m. ET near the White House and United States Capitol.

"This service will be

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