New York, Apr 15 : Marilyn Chambers, one of the first mainstream porn superstars, has been found dead aged 56.

The pioneering porn star was discovered unconscious by her 17-year-old daughter at her mobile home in the Los Angeles suburb of Canyon Country on Sunday night.

Authorities said that they did not suspect foul play and were conducting toxicology tests, reports The New York Daily News.

The angelic-looking, blue-eyed blond starred in Behind the Green Door (1972), the first hardcore film to reach a mainstream audience.

Los Angeles - Porn star Marilyn Chambers, who pioneered the transformation of adult movies from the furtive to the mainstream, has died at age 56 at her Los Angeles County home, police said Monday. Chambers, whose real name was Marilyn Ann Taylor, starred in 1972's Behind The Green Door, which is often seen as the first porn film to gain widespread distributions as video cassettes were becoming popular in US homes. Chambers was famous at the time as a model for a popular soap brand and her career switch to porn star was widely covered in the media.