Fairfield Officer Doug Day told reporters Wednesday that police are confident they know who killed Chelsea Johnson. The Fairfield girl went missing in April 2012. Her body was later found near a creek.
Police did not say why the person they suspect in the killing has not been charged.
Media outlets reported a 24-year-old man was convicted of offering Johnson drugs in exchange for sex near the time of her death, but he was not charged in the slaying.
A vigil was held at Johnson’s gravesite over the weekend.
Fairfield is about 20 miles north of Cincinnati.