Atlanta (CNN) -- The day after little Jorelys Rivera's mangled body was found in a suburban Atlanta trash compactor, Ryan Brunn sat in a stark room for a police interview. He began with confidence, but ended with trouble. Keith Sitton, a special agent with the Georgia Bureau of Investigation, hooked up the jeans-clad Brunn to a polygraph machine. Then, he fired off a series of questions to the 20-year-old maintenance man. A videotape of Brunn's polygraph test was released Thursday. "Regarding that girl, do you intend to answer these questions truthfully?" "Yes." "Did you participate in any way in causing the death of that girl?"Ryan Brunn tells an agent in Georgia that he had nothing to do with the killing of Jorelys RiveraThe agent confronts him about some responsesLater, Brunn pleaded guilty and described in court how he killed the little girlBrunn committed suicide after his sentencing
His shirt sleeve rolled up to his shoulders, Brunn begins by telling _ that on a scale of one to 10, he is a 7.5 on the truth meter. _ tells him not to worry about his calls, that he's got more important things to worry about.