Two years ago, former NFL player Phillip Adams shot and killed six people in Rock Hill, South Carolina, before committing suicide as police closed in on him. His family has now sued the college he attended, over the head trauma he allegedly suffered while playing football there.

Via WCNC.com, Alonzo Adams has filed a lawsuit against South Carolina State University for negligence in connection with allegedly failing to properly warn Adams about the dangers of repetitive blows to the head, and for allegedly failing to provide better protection to football players.

The suit contends that Adams developed Chronic Traumatic Encephalopathy based on his time playing college football, and that the head trauma resulted in the actions that led to his death.