Both Crumbleys were convicted on four counts of involuntary manslaughter tied to the 2021 shooting at Michigan's Oxford High School carried out by their son, Ethan Crumbley, who was 15 at the time.
A Michigan jury found James Crumbley was criminally responsible for the four murders his son, who was 15 at the time, committed at Oxford High School in 2021.
Prosecutors said Crumbley and her husband ignored signs that their son, Ethan, was seriously troubled, bought him the gun he used and didn't take steps to prevent the 2021 Oxford High School shooting.
