United Kingdom, Sept. 24 -- Charlie Kirk's producer has called for Jimmy Kimmel to issue an apology.

The 57-year-old comedian has returned to work after his TV show was suspended following controversial remarks that he made after the political activist - who died on September 10, aged 31 - was shot dead on a university campus, but Andrew Kolvet, a producer of The Charlie Kirk Show, wasn't happy that Jimmy didn't issue an apology during his latest monologue.

Speaking on America's Newsroom, Andrew said: "Where was the 'I'm sorry?' Where was the contrition?

"Yes, he was emotional, but I think he was emotional because, A, he's really good on camera, and, B - well, I wouldn't say really good, maybe, but he's used to it - and, B, because he'...