A former South Carolina teacher was charged with having a prolonged inappropriate relationship with a teenage boy. 

Nicole Ballew Callaham, 33, turned herself in to the Anderson County Detention Center Thursday, the Anderson County Sheriff’s Office said. 

She was charged with three counts of criminal sexual conduct with a minor and one count of contributing to the delinquency of a minor. 

The boy came forward after turning 18, “following time spent processing the experience and trauma associated with the abuse,” authorities said. 

In addition to the charges in Anderson County, the Greenville City Police Department has brought similar charges against Callaham. 

The alleged conduct extended into its jurisdiction when the boy attended school in Greenville. Callaham has resigned from Anderson School District Five. 

Fox News Digital has reached out to the district.