Turning Point USA Founder Charlie Kirk is dead, President Donald Trump confirmed Wednesday.

“The Great, and even Legendary, Charlie Kirk, is dead,” the president posted on Truth Social. “No one understood or had the Heart of the Youth in the United States of America better than Charlie.”

“He was loved and admired by ALL, especially me, and now, he is no longer with us,” the president added. “Melania and my Sympathies go out to his beautiful wife Erika, and family. Charlie, we love you!”

An unknown assailant opened fire at Kirk’s event at Utah Valley University in Orem as he conducted a question and answer session with students Wednesday.

Kirk was debating with a student about mass shootings involving people who identify as transgender when the shooter opened fire, according to The Wall Street Journal’s review of videos of the attack.

The Southern Poverty Law Center had added Turning Point USA to its “hate map” with Ku Klux Klan chapters in May. The SPLC condemned the shooting Wednesday.

Tyler O'Neil is senior editor at The Daily Signal.

This article was originally published by The Daily Signal.