Jennifer Crumbley emotional as trial begins

In 2021, Jennifer Crumbley's then 15-year-old son took a gun she and her husband bought and opened fire at Oxford High School in Michigan, killing four students and injuring others.

Crumbley faces four counts of involuntary manslaughter for those deaths, a first-of-its-kind trial in the US, for failing to stop her son, Ethan Crumbley, from carrying out the shooting.

She appeared in court Thursday for the beginning of her trial.