Former Nebraska running back Calvin Jones died Wednesday. He was 54. Jones was found dead in his basement after Omaha Police were called by a neighbor who reported a gas odor. According to WOWT in Omaha,

Former Green Bay Packers Super Bowl champion and Nebraska Cornhuskers legend Calvin Jones died Wednesday. He was 54. The running back’s death is indicative of carbon monoxide poisoning, Omaha police told WOWT-TV.

Carbon monoxide (CO) is an odorless, colorless gas that kills without warning. According to the Centers for Disease Control and Prevention, more than 400 people die from CO poisoning every year. Carbon monoxide is a gas caused by incomplete combustion,