Christman reportedly felt chest pains the day before he died while practicing and underwent an EKG at a team facility.

The death of UNLV offensive lineman Ben Christman was caused by a heart condition, the coroner's office in Clark County, Nev., said.

College football player Ben Christman's cause of death has been revealed almost three months after he was found dead at age 21. Christman — a student and football player at the University of Nevada, Las Vegas (UNLV) — was discovered deceased in his off-campus apartment on the morning of Tuesday, Feb. 11, PEOPLE previously reported.