Missing Missouri Girl: Suspect, Bobby Bourne Jr., Arrested as Search Continues for Adrianna Horton desperate search for the 12-year-old missouri girl. Adriaunna horton was last seen climbing into an suv monday afternoon. A former neighbor has been charged with kidnapping her. But the girl is still missing. Abc's alex perez is joining us with the story. Police arrested that suspect less than two hours after the 12-year-old girl disappeared. The problem now is, they can't find her. This morning, 34-year-old bobby bourne jr. Is behind bars, in the disappearance of adriaunna hort horton. But despite a frantic search, the 12-year-old girl is nowhere to be found. Overnight, 400 volunteers, loved ones and law enforcement, in golden city, missouri, used FLASHLIGHT, ATVs, AND A Helicopter to search for horton. We're going to exhaust every lead that comes in. Reporter: The always-smiling tween disappeared late monday afternoon. She was wearing a pink t-shirt with hearts on it and was celebrating the end of her first day of school, at a park about half a block away from home with her sister and friends. That's when witnesses reported seeing her get into an suv. Adriaunna's father said the driver of that suv was asking children at the park for help. Saying he couldn't find his daughter. He asked the girls in the park to help him. My oldest daughter walked up to his vehicle, when she was abducted. Reporter:90 minutes later, police say they stopped a similar vehicle, and arrested bourne, who was driving alone. Adriaunna's father, james, has had contact with bourne before. He worked with me. He lived less than a block behind us for a year. Reporter: Now, with anxiety growing, this tiny town of about 750 is praying for adriaunna. Reporter: And adriaunna started sixth grade this week. Her grandmother says, she still has hope she'll be back in that classroom very soon. Lara? Hope she's okay. We all do.