The move comes after he purportedly made an audio recording calling the government's publicly stated reasons for arresting 11 princes "false" and "illogical."
The nearly six-minute-long audio has been posted online and published on Arabic media websites this week. The Associated Press could not independently verify its authenticity.
After the audio was made public, state-linked Saudi news websites Sabq and Okaz reported Prince Abdullah bin Saud bin Mohammed had been fired from his post.