Conan O’Brien said Monday that the set of his late-night talk show was burglarized in Los Angeles.

The crew of the “Conan” show realized earlier Monday that a few laptops and a clapperboard — a simple filmmaking device usually used to mark scenes and takes — were missing from their temporary set at Largo at the Coronet Theater in West Hollywood.

“We come to this theater, because we thought theaters are in trouble, let’s revive a theater, let’s keep it going,” O’Brien, who in July transitioned from taping at home to the new location, said during his Monday night show.

“Seemed like a nice thing to do … what happens? We get here this morning and we find out that someone broke into our little theater and took some of our equipment,” the host said.

O’Brien joked that he understood why thieves would target laptops, but had a hard time wrapping his head around why somebody would take a clapperboard — also known as a slate.

“What’s a robber gonna do with this thing,” he said referring to the film-making tool. “It’s what kids use, it’s what 16-year-olds use to make a student film.”

“They took that, that’s the lowest. I can’t think of anything lower.”