had a falling out with his roommates, who he identified as neo-nazis. >> they would stay stuff like they want to go target like blacks. these people, they were not just innocent people. they weren't just my roommates is what i mean. >> inside the apartment, the bomb squad also discovered explosive components, including homemade fuses and even radioactive material. arthurs claimed it belonged to a fourth roommate named brandon russell, a member of the florida national guard and the founder. >> he is the leader of the organization. i was a senior leader. >> i thought i had heard the name of just about every hate group in america, but i had never heard of adam. what i find about them online is deeply disturbing.