The production company behind the popular Amazon Prime animation series “Invincible” is conducting an internal review after allegations emerged that one of the show’s sketches was found on a cloud server connected to a North Korean Internet Protocol (IP) address.

In a statement posted on social media, Skybound Entertainment said it does not work “with North Korean companies, or any affiliated entities, and have no knowledge of any North Korean companies working on our animation.”

“Our policies strictly prohibit any subcontracting to any third party without our express prior written consent, which, in this case, was neither sought nor granted,”