"For the record, I am appalled by the photo shoot Kathy Griffin took part in," he tweeted. "It is clearly disgusting and completely inappropriate."

Many people online have called for Griffin to be jailed.

The US comedian first said she does not condone violence after a shock photo from the shoot, taken by Tyler Shields and obtained exclusivity by TMZ, surfaced online.

She later tweeted a video of herself, looking sombre and makeup-free, apologising for the ordeal.

"I sincerely apologise. I'm just now seeing the reaction of these images. I'm a comic, I cross the line. I move the line, then I cross it. I went way too far," she said.

"The image is too disturbing. I understand how it offends people. It wasn't funny. I get it. I've made a lot of mistakes in my career; I will continue. I ask your forgiveness. [I'm] taking down the image. [I'm] going to ask the photographer to take down the image and I beg for your forgiveness. I went too far. I made a mistake and I was wrong."