Newly filed court records say the FBI zeroed in on a woman suspected in jewelry store robberies across the South after analyzing cell tower information, finding that one specific phone number showed up at or near jewelry stories in Georgia, Florida and South Carolina while they were being robbed.

The records detail how authorities then used the phone number to identify a suspect, 24-year-old Abigail Lee Kemp, and found a photo of a maroon Honda Civic on her social media accounts that matched the description of one seen in surveillance video.

Kemp was arrested Friday in the Atlanta suburb of Smyrna, Georgia, along with one other person with her at the time, the FBI said late Saturday. Authorities haven't identified the alleged accomplice.

Federal court records do not list an attorney for Kemp.