On Feb. 6, Jennifer Crumbley became the first parent in the U.S. to be found guilty of involuntary manslaughter for a mass shooting carried out by her son.

On Nov. 30, 2021, Jennifer’s son, Ethan Crumbley, opened fire at Oxford High School, where he was a student at the time. Ethan killed four classmates and injured seven others. On Oct. 24, 2022, Ethan pled guilty to one count of terrorism causing death, four counts of first-degree murder and 19 other charges stemming from the mass shooting. He was sentenced to life in prison without parole last December.

Jennifer was convicted of four counts of involuntary manslaughter for her role in the shooting. Both she and her husband, James Crumbley, are accused of not getting their son the necessary help for his mental health despite signs, and for purchasing the gun for their son. Prosecutors argued that Jennifer Crumbley knew her son – 15 at the time of the shooting – was struggling with alarming mental health issues. They said instead of getting him the help he needed, she and her husband bought their son the gun used in the attack and attempted to flee when it was becoming likely they would be charged.

Involuntary manslaughter carries a maximum sentence of 15 years in prison. Jennifer is set to be sentenced in April, with James Crumbley’s trial scheduled to begin Mar. 5.

Jennifer’s guilty verdict could likely impact how parents’ responsibility is viewed, and what it could mean for the parents of other mass shooters. Prosecutors argued that the Crumbley parents, who bought their son the weapon used in the shooting as a gift, failed to prevent the attack, despite school officials warning them the morning of the shooting that he was showing concerning signs. Some legal experts argued this verdict could open the door for more prosecutors around the country to hold parents responsible for shootings.