Hall County District Attorney Lee Darragh confirmed Friday he is looking into whether letters Lisa Clark purportedly wrote to her teenage husband from prison were a violation of the terms of her sentence.

Clark, who was prohibited by Judge Bonnie Chessher Oliver from contacting the teen who fathered her child until he reached the age of 17, could see a portion or the balance of her probation revoked if a judge finds she violated the law. Clark has roughly seven years remaining on her Hall County probation, though the final five years were to be suspended if she did not violate the terms during the first five years of her 10-year sentence. Nine months of that sentence were served behind bars.

The existence of the letters was revealed in Clark's book "Betrayed: The True Life Story of Lisa Lynette Clark," a graphically descriptive 191-page memoir written while Clark was imprisoned on charges of hindering the apprehension of a child. That two-year prison sentence from Douglas County was served concurrently with the nine-month sentence Clark received in Hall County.

Clark, 39, was released from prison Feb. 22 and the book appeared in stores the same day. It was subsequently pulled by its publisher, Phoenix Publishing House, for "re-editing" after it was determined that names of people Clark said she had sexual encounters with should be deleted because of privacy concerns.

The book details letters that were written to the teen when he was 16, according to the teen's grandmother, Judy Hayles. The teen is now 17 and living with his mother in Texas. The child he had with Clark is nearly 2 years old and in the custody of foster parents.

Darragh said Friday that the law allows for a person's probation to be revoked for violations committed while incarcerated.

"I don't express any opinions on whether Lisa Clark violated her probation, but I have been told that the recent publication that has been in book stores contains letters to her young husband while she was incarcerated," Darragh said. "If that is so, it is a potential violation of her probation that is worthy of examination."

A phone message left with Clark's current attorney, Kim Dymecki, was not returned Friday.

The Associated Press contributed to this report.