IIRC, he killed the CIA officer with his teeth.
Teeth were used to kill Spann—according to Lucy Goldberg on her radio show. She expressed utter horror at what she reading over the air! I was there listening to the show, which might have been the ONLY report.
If you watch the video, they basically tore Spann apart with their bare hands and teeth. They were on him like the animals that they are.