Stephen Colbert and Jimmy Kimmel are speaking out to condemn the killing of Charlie Kirk.

Colbert opened the Sept. 10 episode of "The Late Show" with a somber message delivered from his desk after Kirk, the conservative activist and co-founder of Turning Point USA, was shot and killed at an event at Utah Valley University earlier in the day. A manhunt for the shooter remains underway.

The comedian explained the shooting took place after that evening's episode of "The Late Show," which tapes in the afternoon, had already been written.

"Our condolences go out to his family and all of his loved ones," Colbert said.

"I'm old enough to personally remember the political violence of the 1960s, and I hope it is obvious to everyone in America that political violence does not solve any of our political differences. Political violence only leads to more political violence."