LOS ANGELES , California ( CNN ) -- Porn icon Marilyn Chambers was found dead in her Los Angeles home Sunday night , but investigators do not suspect foul play , according to a Los Angeles County Sheriff 's spokesman . Marilyn Chambers rose to fame as an adult-film actress in the 1970s . Chambers began her career in 1970 as a model for Ivory Snow soap , and starred two years later in the porn classic `` Behind the Green Door . '' `` She was a really nice girl , '' said actor Ron Jeremy , who co-starred with Chambers in adult films starting in the 1970s . Chambers ' death was a `` total shock , '' Jeremy said , because they had been scheduled to sign a contract Monday to perform together in an off-Broadway `` tongue-in-cheek '' re-enactment of the porn classic `` Deep Throat . '' `` What 's strange is that she was at a stage where she was totally happy and totally content with her life , '' Jeremy said . `` Her life was falling together , and she was doing really well . '' A family member found Chambers , 56 , in the mobile home where she lived in the Canyon Country area and called police Sunday evening , sheriff 's spokesman Steve Whitemore said . The death appeared to be from natural causes , although toxicology tests have not been completed , Whitemore said . The coroner 's investigation has not been completed , and no cause of death has been determined , according to a spokesman with the Los Angeles Medical Examiner 's office . Although her career was mostly in X-rated films , Chambers ' fame was boosted by the irony that her face had graced the Ivory Snow box , a soap advertised as `` 99 and 44/100 percent pure . '' Chambers eventually co-starred with all of the best-known porn actors of the 1970s and 1980s , Jeremy said .
NEW : She had been set to sign contract for off- Broadway show with Ron Jeremy . Ron Jeremy starred in some of the most famous porn movies of Sunday . Chambers , once a model for Ivory Snow , was in `` Behind the Green Door Chambers ' body was found '70s ; investigators do not suspect foul play .