PHOENIX (AP) The father of a former Arizona State University linebacker has filed a wrongful death lawsuit against the university and NCAA, alleging his son’s suicide came during a mental breakdown caused by four concussions he suffered a few years earlier while playing college football.

Jason Franklin’s father, Gregg Franklin, alleged flawed concussion management protocols contributed to his son developing the degenerative brain disease chronic traumatic encephalopathy, which was discovered after his 2018 death, according to the lawsuit filed Monday in federal court.

The lawsuit seeks class-action status to cover all now-deceased ASU football players from 1952 to 2015 who were diagnosed in life or death with Alzheimer’s disease, dementia, Parkinson’s disease, chronic traumatic encephalopathy and other neurodegenerative disorders.