actress and blues singer who wasfound dead in her Nashville home last month, died of heart disease.According to a coroner's report obtained by on Monday, Dukureh's official cause of death is listed as «hypertensive and atherosclerotic cardiovascular disease» and the manner of death is listed as «natural.» As ET previously reported, Dukureh -- who played Big Mama Thornton in the Baz Luhrmann production -- was found dead on the morning of July 21, in the bedroom of her apartment that she shared with her two young children. One of them found her unresponsive and ran to a neighbor’s apartment, where police said, at 9:27 a.m., the neighbor called 911.In addition to landing her first major film role in , Dukureh appeared in Doja Cat's «Vegas» music video, where she played the Big Mama Thornton role as well.At the time of her death, director Luhrmann released a statement in her honor.«A special light went out today and all of the movie family are heartbroken by the loss of Shonka Dukureh.