1:13 PM PT -- Officials have now arrested a THIRD person in connection with Aniah's disappearance.
David Johnson Jr. was taken into custody in Montgomery, AL and has been charged with hindering prosecution, according to prosecutors.
Heart-breaking news in the search for Aniah Blanchard ... cops believe they found the 19-year-old's body in a wooded area in Alabama.
Cops have been searching for Aniah ever since she was abducted from a Chevron station on Oct. 23. Blanchard is the step-daughter of UFC fighter Walt Harris.
Days after her disappearance, officials had found Aniah's car, which was covered in blood ... and believed she had suffered a fatal injury during the kidnapping.
Cops hunted down Ibraheem Yazeed -- the prime suspect -- who was seen at the gas station with Blanchard in the moments before her abduction. He was arrested in Florida after leading cops on a pursuit and suffered a busted eye during the apprehension. He's since been charged with 1st-degree kidnapping.
Now, terrible news ... cops say they found human remains in Macon County, Alabama and they believe it's Aniah.
"I can confirm that human remains have been found in Macon County on County Road 2 and we have good reason to believe they are that of Aniah Blanchard," Lee County District Attorney Brandon Hughes said.
BREAKING: SBI confirms skeletal remains have been found in Macon Co. Lee Co DA Brandon Hughes says they have good reason to believe it is the remains of missing Lee Co college student Aniah Blanchard @wsfa12newspic.twitter.com/gu6xzuyT8X