Webjennifer crumbley, the mother of the teenager who killed four students at an oxford, michigan, high school in 2021, was found guilty tuesday of all four counts of. Webjennifer crumbley, the mother of the teenager who killed four students at an oxford, michigan, high school in 2021, was found guilty tuesday of all four counts of. Webcrumbley, 45, was convicted of four counts of involuntary manslaughter for her role in the nov.

30, 2021, shooting in which her son, ethan, opened fire at oxford. Webmichigan jurors, after 11 hours of deliberations, found jennifer crumbley guilty of involuntary manslaughter on tuesday for the gun rampage committed by her. Jennifer crumbley, 45, is the first us.