WATCH: Occupy Iowa Caucus video by Anonymous

The Des Moines Register reports:

A group "that has caught the attention of the FBI and taken credit for hacking into military and corporate websites has now claimed responsibility for creating a video that urges its supporters to shut down the Iowa caucuses."

Local authorities say they are aware of the video, are preparing for possible action by the group and are in contact with the presidential campaigns about the issue.

The group is believed to have no centralized operational leadership and is separate from the Occupy Des Moines participants.