DETROIT—A teenager awaiting sentencing for killing four students at a Michigan high school has been “exhibiting sporadic, disturbing behavior” in jail, prosecutors said, just a month before a key hearing to determine if he will serve a life prison term.
The disclosure about Ethan Crumbley, 17, was made in a court document this week and at a routine monthly hearing Friday in Oakland County court.
Prosecutors did not offer any details in public but shared them privately with Judge Kwame Rowe and Crumbley’s attorneys.
Crumbley pleaded guilty to murder, terrorism, and other charges for a mass shooting at Oxford High School in 2021. Four fellow students were killed and seven more people were wounded….