NASHVILLE, Tenn. - Sources close to the investigation into the kidnapping of a newborn boy said the Department of Children Services is accusing Maria Gurrolla of trying to sell her infant. Gurrolla is the woman who was attacked in her home last week.

Police have already arrested a woman in Alabama, but investigators are not finished with the case. There is a hearing scheduled for Monday afternoon in juvenile court to discuss the DCS part of this case.

There is paper work filed in juvenile court alleging Gurrolla tried to sell the baby. That is allegedly why DCS took the baby and her three other children into custody over the weekend.

Investigators are looking at phone calls made by the suspect after the attack. Late Friday, the FBI arrested 39-year-old Tammy Silas in Ardmore, Alabama.

Silas is charged with the federal offense of kidnapping. She is also accused of attacking Maria Gurrolla last week with a knife and stealing her then 4-day-old baby.

Court documents show Gurrolla told investigators after the attack she heard the suspect speaking on the phone.

Gurrolla told an FBI agent her attacker said quote "the job is done" and "she [Gurrolla] was dying."

The FBI is holding Silas in the Morgan County Jail in Alabama. She'll appear in federal court when U.S. Marshals bring her back to Nashville. No court date has been set.