the driver is identified as 23-year-old wayne williams, an aspiring music promoter who investigators later determined has lived near many of the victims. >> and they questioned him about why was he on the bridge. he said he was coming from cobb county, had been to some girl's house. and secondly, he asked him, what did you throw of the bridge? he said, i threw some garbage. >> he was nervous. there were some items in the back of the car, one being a rope or ligature-type instrument with some clothing. williams made the statement to the effect, what's this all about? and then he said, i know it's about those kids, isn't it? and they didn't feel they had probable cause to make an arrest because nobody saw a body. and so they let him go on his way. >> though they had a suspect in their grasp, police are forced to let williams go. two days later, they discover the body of 27-year-old nathaniel cater in the chattahoochee river.