Prosecutors say a woman and man accused of robbing jewelry stores across the South have been indicted by a federal grand jury in northern Florida.

The two are charged with conspiracy, obstructing commerce by robbery, and brandishing a gun in a violent crime.

FBI agents say 24-year-old Abigail Kemp and 35-year-old Lewis Jones III stole an estimated $4.3 million in jewelry by robbing six jewelry stores in Georgia, Florida, Tennessee, North Carolina and South Carolina.

Authorities used cellphone records and tips from the public to find and arrest both of them Jan. 8 in the Atlanta suburb of Smyrna, Georgia.

Court records show that both suspects pleaded not guilty. Calls to their attorneys weren't immediately returned Monday.

A trial for both suspects is scheduled for March 21 in Panama City.