Omaha police still have not revealed the cause of death for Melanie Koontz.
An ex-boyfriend of a Benson High School student found dead in Cole Creek has been charged as an adult with her murder.
16-year-old Justin Lenz was arrested Thursday night on first-degree murder charges for the death of Melanie Koontz. Members of her family say the two dated for a short time.
Omaha police have never said what the cause of death was, or if it happened at the Cole Creek location where her body was found.