Donald Trump has revealed he made some “very big people” immediately leave the Oval Office when he was told about the murder of conservative activist Charlie Kirk on Sept. 10. Speaking at Kirk’s memorial in Arizona on Sunday, the president explained how he met the 31-year-old through his sons Eric and Donald Jr. During his speech, Trump also spoke of the “surreal experience” of being told that Kirk had been assassinated. He was shot while appearing at an open-air event at a college campus in Utah. Explaining how hearing the news was a “horrible moment,” Trump said, “I had some very big people in the Oval Office and I was in the midst of a very important conversation for our country.” He added they were, “big people, the biggest.” The president recalled telling his guests they had to leave. “When they told me that, they told me in front of a group of very powerful people, I said, ‘You have to leave now, right now, please right now, you have to leave, go.’” The Daily Beast has contacted the White House for comment. As well as sharing the stage with Kirk’s widow, Erika, Trump also recalled how Kirk would call him the night before a big event, asking him to be a guest speaker. “I’d say, ‘Charlie... I’m the president of the United States. You want me to travel four hours by plane?’ And you know, sometimes I did it.”