The parents of a boy who murdered students at a Michigan high school and the father of a man who opened fire on a Fourth of July parade in Illinois are facing charges in the killings in what marks an uncommon move by prosecutors and raises questions about who can be held accountable for mass shootings.

It’s “incredibly unusual” for parents or guardians to be charged in relation to crimes committed by their child, said Dmitriy Shakhnevich, a criminal defense attorney and adjunct assistant professor at the John Jay College of Criminal Justice.

“It can’t be just that the parents knew, generally speaking, that this kid had violent tendencies and therefore they should be held criminally responsible,” he said. “But, in these cases, you do have facts that draw a close connection.”

The cases are among the first times parents have been charged in a mass shooting committed by their child, said James Densley, co-founder of the Violence Project, a nonprofit research center. “I can see this becoming more common if it sets a precedent,” he said.

Parents of Oxford school shooting suspect charged with involuntary manslaughter

The Michigan Court of Appeals on Thursday ordered the parents of the 15-year-old who murdered four students and injured seven others at Oxford High School in Michigan to stand trial on charges of involuntary manslaughter in the November 2021 shooting.

Prosecutors say James and Jennifer Crumbley should have forseen the massacre and intervened to stop it. They bought their son the gun used in the shooting despite knowing he was struggling mentally, and they were called to the school the morning of the shooting over a troubling drawing but didn’t bring him home.

“Despite their knowledge of all of these circumstances, when given the option to help (their son) and take him out of school, the defendants did nothing,” the appeals court wrote.

Defense attorneys say the Crumbleys had no idea their son would carry out a mass shooting and made bad decisions but should not be held criminally liable.

In charging the Crumbleys weeks after the shooting, Oakland County Prosecutor Karen McDonald acknowledged charges are not often brought against parents in other school shooting cases.