Ethan Crumbley's appellate lawyers cited his mental health and other factors when he waived his right to trial at age 16 and pleaded guilty to killing four students at Oxford High School in 2021.

Ethan Crumbley’s appellate lawyers cited his mental health and other factors when he waived his right to trial at age 16 and pleaded guilty to killing four students at Oxford High School in 2021.

Ethan Crumbley opened fire at Oxford High School in Michigan on Nov. 30, 2021, killing Tate Myre, Hana St. Juliana, Madisyn Baldwin and Justin Shilling, injuring six other students and a teacher.

(CBS DETROIT) — Jennifer Crumbley, the mother of the Oxford High School shooter, is asking a judge to overturn her involuntary manslaughter conviction. In a motion filed Monday in Oakland County ...

Jennifer Crumbley, the mother of the Oxford High School shooter, is asking a judge to overturn her involuntary manslaughter conviction. Former federal prosecutor Rick Convertino joins CBS News ...

Jennifer Crumbley speaks before she is sentenced on involuntary manslaughter charges in Oakland County Circuit Court on April 9, 2024. (Photo: Anna Liz Nichols) The mother of the Oxford High ...