Natalie Wood

Authorities have amended Natalie Wood's death certificate to reflect the lingering uncertainties surrounding her drowning more than 30 years ago.

According to a copy of the death certificate obtained by The Associated Press, the cause of death was changed from accidental drowning to "drowning and other undetermined factors." The coroner's office also amended the death certificate to state that the reasons leading to Wood ending up in the water are "not clearly established."

Case closed: Investigators say no evidence of foul play in death of Natalie Wood

The investigation into Wood's drowning was reopened nine months ago when the captain of the boat she had been on, Dennis Davern, said he had heard Wood and her husband  Robert Wagner arguing the night of her disappearance and blamed Wagner her death.

Wood's death took place on Thanksgiving weekend 1981 while yachting off Catalina Island with her husband and Christopher Walken. Both actors have shared conflicting versions of what happened that night, but authorities are not looking at Wagner as a suspect.

Natalie Wood earned her first major role at the age of 8 in Miracle on 34th Street. She went on to appear in Rebel Without a Cause, West Side Story and a remake of From Here to Eternity. Throughout her career, she was nominated for three Academy Awards and eight Golden Globes, of which she won three.