Erin Moran, who is famous for playing Joanie Cunningham on the hit show "Happy Days," was found dead last Saturday. An autopsy is still pending, although it is speculated that Moran's cause of death is stage 4 cancer.

The actress, who became famous for playing Joanie on "Happy Days" and the spin-off series "Joanie Loves Chachi," was found dead in Indiana after an anonymous caller informed authorities of an "unresponsive female." TMZ reports that when EMT arrived, Moran was declared dead.

Moran began her road to fame in the early 1970s when she was cast as Joanie. She continued on to play the role in the spin-off series that premiered in 1982, where she was paired with Scott Baio.

After "Joanie Loves Chachi" was canceled after one season, Moran started struggling with life. The actress turned to drinking and developed an addiction. Later on, Moran found herself living in a trailer park with her husband in Indiana, The Hollywood Gossip confirmed.

Unfortunately, Moran soon lost all her money and was kicked out by her own husband from the trailer that they live in together.

In 2011, Moran and three of her co-stars in "Happy Days" filed a lawsuit against CBS for a breach of contract. Moran and her co-stars were asking rightful payment after the network created merchandise related to "Happy Days," where they were not given proper compensation.

A year later, CBS settled with Moran and company and they were given an undisclosed amount.

In 2012, Moran revealed in an interview with James Vallo that she was trying to get back into starring in films and TV shows. Although she was having difficulties, Moran was hopeful that thing will turn out for the better.

CNN reports that the results of the autopsy are still pending, but a statement reveals that Moran might have died due to stage 4 cancer. However, based on some of the tests, the use of illegal narcotics has been ruled out.