Michigan school shooter's mother guilty of manslaughter, jury finds

A jury found Jennifer Crumbley, mother of a Michigan school shooter, guilty of four counts of involuntary manslaughter.

Prosecutors said Crumbley was grossly negligent and could have foreseen the violence before her son opened fire at Oxford High School on Nov. 30, 2021.

She failed to tell school officials that the family had a new 9mm handgun that Ethan Crumbley ultimately used to kill other teens.