Two women were arrested Tuesday on suspicion of aggravated murder after authorities identified the remains of a child found alongside an interstate rest area in Oregon.

Haley Mae Coblentz was identified on Oct. 4, after samples of her remains were sent to a lab for DNA testing. 

Coblentz was 9 at the time of her death, which police estimate occurred one or two months before her remains were found on Dec. 10, 2020. The corpse was inside a duffel bag at the H.B Van Duzer Forest State Scenic Corridor.

Sketch of Haley Mae Coblentz, whose remains were found alongside a Lincoln County rest stop in Oregon.

Sketch of Haley Mae Coblentz, whose remains were found alongside a Lincoln County rest stop in Oregon. (Oregon State Police)

Coblentz was never reported missing.

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Investigators on Tuesday arrested her mother, Shawna Browning, and Lauren Harrison in Detroit on suspicion of aggravated murder, police said. Authorities also served a search warrant on their vehicle and hotel room.

Haley Mae Coblentz's remains were found alongside a Lincoln County rest stop in Oregon.

Haley Mae Coblentz's remains were found alongside a Lincoln County rest stop in Oregon. (Oregon State Police)

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Browning, 29 and Harrison, 34 were taken to a Wayne County jail in Michigan, where they are being held without bail.

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The Associated Press contributed to this report.