Oxford High School mass shooter Ethan Crumbley, 17, who is serving a life sentence, got into a fight with another teenager in the Thumb Correctional Facility in Lapeer on Tuesday, the Detroit Free Press reports.
He now faces possible sanctions.
Crumbley, whose parents were recently convicted of involuntary manslaughter in connection with his rampage, fought with a 17-year-old in a unit for inmates 18 and under, the Freep reports.
“There were no weapons and no serious injuries," MDOC spokesman Kyle Kaminski tells the Freep. "Staff responded and broke it up. And so both prisoners have been issued misconducts" with sanctions to be determined.