they got a look inside pelican bay and inside the arian brotherhood. >> reporter: this is pelican bay state prison where many of california's most vicious inmates are marking time. it is also the base of operations of what corrections officials say is perhaps the most dangerous prison gang in the state, the arian brotherhood. last week ktvu got a rare look inside what prisoners call the hole, the special security housing unit where gang members live in small cells. we have learned that prison officials are investigating allegations that here from the hole the arian brotherhood is plotting to assassinate some of the very people who run the prisons. >> right now it is cdc administrators, politicians. >> and so you think you are on top of this stuff? >> yes, we are doing okay. >> reporter: corrections department officials say they have taken precautions. but they also say one activity the arian brotherhood is extremely adepartment at is murder. convicted murderer douglas young of san jose used to be a member of the arian brotherhood until he became an informant against the group. so you