New York (CNN Business)Larry Flynt, the "Hustler" magazine founder and outspoken First Amendment activist who built an adult entertainment empire, died Wednesday at his Hollywood Hills home, his nephew, Jimmy Flynt Jr., tells CNN. He was 78.

His exact cause of death was not disclosed, but Flynt Jr. said his uncle had been in frail health for much of the past 30 years and that his death was not related to Covid-19.