WHITESTOWN — A Rome woman charged with shooting and killing her mother on Milton Avenue is facing a new charge after being found with a sharpened toothbrush at the county jail, according to Oneida County Court officials.

Police said Paleigh M. Iannarilli, 23, is accused of killing her mother, 43-year-old Theresa G. Nielsen, at a home on Milton Avenue in Rome on Feb. 7. Law enforcement authorities said Iannarilli used her father’s hunting rifle to shoot her mother.

After being evaluated by two psychiatrists, it was determined that Iannarilli was not mentally fit to proceed in court and she has been undergoing mental health treatment since April.

While she was still at the county jail this summer, authorities said Iannarilli was found in her cell with a sharpened toothbrush.

Iannarilli was indicted by a grand jury earlier this month on one count of promoting prison contraband, authorities said. She was virtually arraigned before Oneida County Court Judge Robert L. Bauer Tuesday morning while still undergoing treatment at a mental health facility.

Court officials said Iannarilli remains unfit to proceed in court and both cases have been adjourned to April 2023 for a status report on her well being.

An indictment is a formal charge made against a person by a grand jury. It does not establish guilt or remove the presumption of innocence.