Ja’Net DuBois’ cause of death has been revealed.
The Good Times star, who also co-wrote The Jeffersons‘ theme song, died of cardiac arrest, according to her death certificate obtained by TMZ.
Prior to her death, DuBois had suffered from peripheral vascular disease and chronic kidney disease, the death certificate shows. She also had high blood pressure.
Following her death, DuBois was cremated and her ashes were dispersed at sea, according to her death certificate.
The Los Angeles County Department of Public Health did not immediately respond to PEOPLE’s request for comment.
DuBois’ friend and former Good Times costar Bernadette Stanis told the Associated Press she learned of the star’s death from DuBois’ daughter.
“She used to keep us laughing all the time,” Stanis told AP. “She was very, very talented. If she wasn’t singing… she was creating a character to make us laugh.”