President Donald Trump announced Thursday that he will award the Presidential Medal of Freedom posthumously to conservative activist Charlie Kirk, who was assassinated in Utah on Wednesday.

Axar.az reports, citing NBC news, Trump made the announcement during remarks at the Pentagon to commemorate the 9/11 attacks.

“Before we begin, let me express the horror and grief so many Americans at the heinous assassination of Charlie Kirk have felt. Charlie was a giant of his generation, a champion of liberty and an inspiration to millions and millions of people,” he said to start his remarks.

“Our prayers are with his wonderful wife, Erika, and his beautiful children — fantastic people they are,” Trump continued. “We miss him greatly, yet I have no doubt that Charlie’s voice and the courage he put into the hearts of countless people, especially young people, will live on.”

Announcing his intention to award Kirk the medal, Trump said a date has yet to be determined, but that “I can only guarantee you one thing: We will have a very big crowd, very, very big.”