The 13-year-old Rowan County girl was last seen in November of 2011 but her family didn't report her missing until July 2013, when she would have been 15.
The Rowan County Sheriff's Office said it recovered skeletal human remains on Tuesday.
Those remains were taken to the North Carolina Medical Examiner's Office and were identified as the remains of Erica Lynn Parsons.
Her remains were taken to Rowan County earlier this week.
New leads obtained in August by the sheriff's office and the FBI led to the investigation that culminated in the discovery of the remains, officials said.
Law enforcement officials said they traced leads in North Carolina, South Carolina and California before finally discovering Parsons' remains.
In a release Thursday night, The Rowan County Sheriff's Office said it will hold a news conference next week to discuss the case.
Erica's adoptive parents, Casey and Sandy Parsons, are serving federal prison sentences for fraud charges.
The investigation remains ongoing.
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