Police said Kayla Unbehaun, 10, was abducted by her mother, Heather Unbehaun of Illinois, last July.
The National Center for Missing and Exploited Children said Kayla's mother has ties to Athens, Georgia, and previously expressed a desire to live off the grid.
In a post on a GoFundMe account, Kayla's father, Ryan Iskerka, said Heather Unbehaun was last seen packing her belongings on the roof of her car for a Fourth of July camping trip with their daughter last year. The two were also spotted at a parade in Wheaton, Illinois.
Unbehaun, who does not have custody of Kayla, was scheduled to give the child back to Iskerka by 7 p.m. July 5, 2017, but they never showed.
Iskerka called the police and an investigation was launched.
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“It was discovered that all of Heather's social media (accounts) had been canceled and her phone turned off,” Iskerka wrote in the post. “As far as we know, no one has been able to reach her or has talked to her since (July 4, 2017).”
A missing person report was filed after the discovery.
Iskerka said he created the GoFundMe account to pay for a private investigator and any other costs surrounding the search.
Anyone with information is asked to call Athens-Clarke County police at 706-613-3888, ext. 792.
– Raisa Habersham of The Atlanta Journal-Constitution contributed to this report.