Watch a previous report on the shooting in the video player above.

LANCASTER, Ohio (WCMH) — A woman will spend at least 18 years in prison after pleading guilty to a February shooting that left her son dead.

According to the Fairfield County Prosecuting Attorney’s Office, Laquandra S. Williams, 44, pleaded guilty Monday to one count of murder with a three-year firearm specification, and one count of felonious assault.

Prosecution and defense council agreed to a joint sentence of life in prison for the murder charge, with the first possibility of parole after 18 years, and life with the possibility of parole after 15 years on the felonious assault charge.

Those charges are to run concurrently, along with the firearm specification to the felonious assault charge. The firearm specification sentence of three years to the murder charge is to run consecutively.

The charges against Williams stem from a Feb. 18 domestic dispute in which Williams tried to stab her son, Jahaad Hughes, 21, with a kitchen knife before shooting him in the back outside a Reynoldsburg apartment.

Williams was sentenced to life in prison with the possibility of parole after 18 years.