Transcript for Credit card information, writings offer new clues about Nashville bomber’s motive
We move on now to the new developments in the Nashville Christmas bomb. New police body camera images showing the moments immediately after the rv exploded, damaging several blocks downtown. Federal authorities learning more about the suspect killed in the blast, and sources telling ABC news he wrote about multiple and bizarre conspiracy theories. ABC's Marcus mooin nashvi Reporter: That newly released body camera video shows the chaos that erupted in downtown Nashville Christmas morning. Police guiding terrified families to safety. Are you guys okay? Yeah. Where's your car? Right there. Okay, go to your car. What's going on? Reporter: Four days later, some business owners and residents able to come survey the damage under FBI escort. When you're looking at all this destruction, it's also kind of amazing that nobody was killed. Reporter: Investigators still aren't saying why Anthony Warner blew himself up in front of the AT&T building. But ABC news has learned that credit card information indicates Warner bought items that could potentially be precursor chemicals in building a bomb. Sources telling ABC news writings associated with Warner contain ramblings about multiple conspiracy theories. Warner may have been motivated, at least in part, by a paranoia and the conspiracy theory that shape shifting reptilian creatures appear in human form and are bent on world domination. A neighbor telling CNN about a chilling conversation just before Christmas. He said, oh, yeah, I'm going to be famous. Nashville and the world will never forget me. Reporter: Tom, I also talked to that neighbor. He said he and other neighbors are shocked and really offended by what happened here Christmas morning, but as a city, they will help each other heal and rebuild. FBI and ATF agents on the hunt for a motive are asking anyone who interacted with Warner to contact them.
This transcript has been automatically generated and may not be 100% accurate.