Ethan Crumbley is alleged to have killed four students and injuring seven others with a gun by Oakland County Sheriffs Office

Ethan Crumbley is alleged to have killed four students and injuring seven others with a gun. (Oakland County Sheriff’s Office)

Ethan Crumbley is alleged to have killed four students and injuring seven others with a gun. (Oakland County Sheriff’s Office)

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Ethan Crumbley is alleged to have killed four students and injuring seven others with a gun by Oakland County Sheriffs Office