(CNN) An apologetic Kathy Griffin took to Instagram to issue a mea culpa for participating in a photo shoot that featured her holding up a bloody head resembling President Donald Trump.

"I'm a comic," she said. "I cross the line. I move the line, then I cross it. I went way too far. The image is too disturbing. I understand how it offends people. It wasn't funny. I get it."

She said she is asking celebrity photographer Tyler Shields to take down the photo.

"I beg for your forgiveness. I went too far," she said in the post on Tuesday. "I made a mistake and I was wrong."

Earlier Tuesday, Shields, who is known for his provocative images, released photos he did with Griffin that immediately came under fire from people on Twitter.

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