James Blair was arrested at the teen's house and taken into custody Thursday afternoon. SBI agents were there talking to the family when he showed up, officials said.
He is charged with one count of statutory rape and more charges will follow, officials said. Bond was set at $1 million.
The girl’s mother said the officer volunteered to mentor her children. She said she was reluctant at first, but then agreed to it because he was a police officer.
The two had been texting on her phone, the mother said. She said she then discovered text messages indicating that he took advantage of her daughter.
One of messages, which is in the hands of the SBI, states, "If you keep that baby I'm done and you know it." Another said, "Do whatever you wanna do, just remember I love you and name it after me."
The officer is off the job. He has been on medical leave for the past 80 days, which started before the investigation began.