The 16-year-old charged with killing four students at a Michigan high school pleaded guilty to all charges on Monday.
Four counts of first degree murder and one count of terrorism that caused death were among the charges against him.
The sentencing date will be set later by the judge after the victims' families are allowed to speak.
Life imprisonment without parole is what Crumbley is facing.
Police responded to calls of an active shooter at Oxford High in November. There were three students dead on the scene. A student died at a hospital. Crumbley was arrested. Prosecutors said the couple was far beyond negligent and gave their son access to a gun and did not address his mental health issues. They denied the charges.
The story is evolving.