A memorial service for right-wing activist Charlie Kirk will be held on 21 September at State Farm Stadium in Arizona, a venue which can seat more than 60,000 people.

Turning Point USA, the organization Kirk co-founded, made the announcement on social media, inviting the public to celebrate his remarkable life and enduring legacy.

Kirk, 31, was shot dead on Wednesday during an open-air speaking event in Utah. His suspected killer, Tyler Robinson, was arrested on Thursday night after surrendering to police.

President Donald Trump is expected to attend the memorial service, along with Vice-President JD Vance and Secretary of State Marco Rubio.

Before departing for Israel on Saturday, Rubio said he would be back in time for Kirk's memorial and remembered him as a great young man.

I admired all the stuff he said and did on campuses, and again, an enormous influence on young people, primarily, he said.

Arizona marks an important place for Kirk - it's the location of Turning Point USA's headquarters and where he and his wife lived with their two children before his death.

Earlier on Saturday, Kirk's widow, Erika, made her first public remarks after her husband's death, pledging to keep his legacy alive.

In a livestream broadcast from Turning Point USA's headquarters, Mrs. Kirk addressed what she called the evil doers responsible for her husband's death, announcing a renewed vigor to continue his mission.

Kirk was shot while hosting one of his signature Prove Me Wrong debates at Utah Valley University. He was discussing questions of gun violence and transgender issues when the incident occurred.

Tyler Robinson, currently held at Utah County Jail, is under special watch as authorities assess potential risks. His first court appearance is anticipated for next week, where formal charges are expected to be laid.

Kirk was a profoundly polarizing figure known for mobilizing young voters for the conservative movement, having played a significant role in Donald Trump's political ascendancy.

In a posthumous tribute, Trump announced that Kirk would receive the Presidential Medal of Freedom, praising him as a giant of his generation.