Fox News correspondent Bill Melugin reports on the charges facing a man allegedly found with a gun and knife at Charlie Kirk's memorial site on 'The Big Weekend Show.'

Conservative activist Charlie Kirk is set to be honored Sunday at a massive public memorial service that will include speeches from President Donald Trump and Vice President JD Vance at State Farm Stadium in Glendale, Arizona.

The memorial service for Kirk, who was assassinated on Sept. 10 during the first stop of Turning Point USA's "The American Comeback Tour" at Utah Valley University, is expected to draw tens of thousands of visitors, including senior White House officials and young conservatives influenced by the late 31-year-old.

Trump said he would attend Sunday's memorial in Arizona to honor Kirk, though he admitted "there are no words to really describe what happened."

"He had just an army of young people," Trump said, describing Kirk's influence on young conservatives. "They loved him so much. I mean, they're devastated right now. Everybody is devastated."

LIVE UPDATES: CHARLIE KIRK'S MEMORIAL SERVICE TAKING PLACE TODAY AT STATE FARM STADIUM IN GLENDALE, ARIZONA

Turning Point USA, the organization Kirk founded in 2012, released guidelines Saturday night for those attending the service, including a patriotic dress code and a strict no-bag policy.

The memorial, titled, "Building a Legacy: Remembering Charlie Kirk," will begin at 11a.m. local time (2p.m. ET) and is "first come, first served based on stadium capacity," according to the event website.

State Farm Stadium, home to the NFL's Arizona Cardinals, has fixed seating for 63,400 and can expand to over 73,000 for larger events, according to the venue.

CHARLIE KIRK'S MEMORIAL: WHAT TO KNOW ABOUT THE EVENT IN ARIZONA

Other scheduled speakers include Health and Human Services Secretary Robert F. Kennedy Jr., Secretary of War Pete Hegseth, Director of National Intelligence Tulsi Gabbard, Donald Trump Jr., Tucker Carlson, White House advisor Stephen Miller and Sergio Gor.

Kirk's widow and Turning Point's new CEO, Erika Kirk, is also set to speak.

CLICK HERE TO GET THE FOX NEWS APP

The memorial will be broadcast on Fox News Channel and streamed on Fox News Digital.

Fox News Digital's Greg Norman and Elizabeth Pritchett contributed to this report.

Trump to honor Charlie Kirk at Arizona memorial, tens of thousands of young conservatives expected to attend