JUST IN: Michigan jury finds mother of school shooter guilty of involuntary manslaughter

According to CNN, the 12-person jury deliberated for more than 10 hours. She had pleaded not guilty to the four counts and faces up to 15 years in prison. Her sentencing is set for April 9.

On November 30, 2021, Ethan Crumbley fatally shot four students in an Oxford, Michigan high school, and injured six students and a teacher.

Prosecutors argued that Crumbley was responsible for the deaths because she was "grossly negligent" in giving a gun to her son and failing to get him proper mental health treatment despite present warning signs.

James Crumbley, Jennifer’s husband, is set to go on trial for the same charges in early March.

"It’s a rare case that takes some really egregious facts," Oakland County Prosecutor Karen McDonald said during closing arguments that took place on Friday. "It takes the unthinkable, and she has done the unthinkable, and because of that, four kids have died."

The defense argued that the blame laid with James Crumbley for improperly securing the firearm, with the school for failing to notify Jennifer Crumbley about her son’s behavioral issues, and on Ethan Crumbley, who plotted and carried out the attack himself.

"Can every parent really be responsible for everything their children do, especially when it’s not foreseeable?" Defense attorney Shannon Smith said in closing arguments, adding that the case was "dangerous" for parents across the country.

Ethan Crumbley, who was 15 when he carried out the attack, pleaded guilty to one count of domestic terrorism causing death, four counts of murder, as well as 19 other charges. He was sentenced in 2023 to life in prison without parole.

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