President Trump and Vice President Vance will deliver remarks this Sunday at the memorial service for the late conservative activist Charlie Kirk, Turning Point USA announced Tuesday.

Trump and Vance, who previously confirmed they would be attending the memorial, will be joined by a slate of other high-profile figures announced as speakers at the massive gathering.

Kirk’s widow, Erika Kirk, will deliver remarks at the memorial.

Other speakers from the Trump administration include White House chief of staff Susie Wiles, Secretary of State Marco Rubio, Health and Human Services Secretary Robert F. Kennedy Jr., Defense Secretary Pete Hegseth, Director of National Intelligence Tulsi Gabbard, White House deputy chief of staff Stephen Miller and White House Office of Presidential Personnel Director Sergio Gor.

Former Fox News host Tucker Carlson and the president’s eldest son, Donald Trump Jr., are also slated to give remarks.

The event website says more names will be announced.

The memorial will take place at State Farm Stadium, where the Arizona Cardinals football team plays and which can hold more than 63,000 people.  

Event admission is on a first-come, first-served basis and is dependent on stadium capacity, according to the event page, where the public is encouraged to register ahead of time for the event.

Doors to Sunday’s event will open at 8 a.m. local time, and the program is scheduled to start at 11 a.m. local time. The dress code is listed as “Sunday Best- Red, White, or Blue.”

Kirk was shot and killed last Wednesday while speaking at an event at Utah Valley University.

Late Thursday, authorities arrested a 22-year-old Utah resident, Tyler Robinson, on suspicion of murdering Kirk. Utah is seeking the death penalty against Robinson, unveiling seven charges Tuesday, including one of aggravated murder.

Trump told reporters Sunday that he will attend Kirk’s memorial. The conservative activist and Turning Point USA founder was a close ally of the administration.

“A very sad weekend. We lost a great person,” Trump said. “I’ll be going on early Sunday morning. We’re going to Arizona, taking some people with us, on Air Force One.”

The president also said on Thursday that he will posthumously award Kirk the Presidential Medal of Freedom.