The Los Angeles County’s Sheriff Office is inching closer to solving one of Hollywood’s greatest murder mysteries: the mysterious death of actress Natalie Wood. Wood allegedly drowned on Nov. 29, 1981.

The death certificate of Natalie Wood has been altered to better show the uncertainties that have surrounded the actress' death on Nov. 29, 1981. The then 43-year-old had drowned in the Pacific Ocean from unknown causes.

The death of Natalie Wood still remains a mystery. The official cause of death for the actress was been changed this week from "accident" to "undetermined", sparking the case to be re-opened once again. According to TMZ, the change has been made to her death certificate at the end of June this year.