Teen pleads guilty to murder in Michigan school shooting that killed four

Ethan Crumbley, now 16, pleads guilty to all charges nearly a year after attack at Oxford high school in south-eastern Michigan

A teenager pleaded guilty Monday to terrorism and first-degree murder in a Michigan school shooting that killed four students and put an extraordinary focus on the boy's home life and the alleged role of his parents in the tragedy.

Ethan Crumbley pleaded guilty to all 24 charges he faced nearly a year after the attack at Oxford high school in south-eastern Michigan. In the gallery, some relatives of the victims were weeping as assistant prosecutor Marc Keast described the crimes.