Human remains found at an airfield in Texas earlier this week are not those of missing teen Hailey Dunn, who disappeared more than a year ago from a nearby town.

The main suspect in Dunn's disappearance was her mother's boyfriend, Shawn Adkins, whose mother lived less than a mile from the airfield where the remains were found.

But an autopsy performed on the remains identified them as belonging to a male, ruling out the possibility of closure for family and friends of Dunn.

Dunn, 13, disappeared from her home in Colorado City, Texas, and the investigation into her disappearance quickly turned to her mother, Billie Jean Dunn, and Adkins. Both Dunn and Adkins failed lie detector tests, admitted to taking drugs the night before Hailey's disappearance, and refused to cooperate with police.

Authorities consider them persons of interest.