Carrie Fisher, best known for her star Wars the role of Princess Leia, who died of sleep apnea and “other factors,” says a Los Angeles County medical examiner.
In January, the 60-year-old “death certificate” said she had suffered a cardiac arrest.
However, a Los Angeles investigator said in a statement that the exact cause was unknown.
Sleep apnea is a common condition in which a person stops breathing during sleep for a few seconds or minutes.
In addition to listing sleep apnea as a cause of death, the forensic doctor’s statement cited other factors, including heart disease and drug use.
The manner of Carrie Fisher’s death will be included in the list as undetermined, it said.
She was on tour promoting her book The diary of the princess when she fell ill from a flight from London to Los Angeles on December 23.
Carrie Fisher never regained consciousness and died on December 27 at Ronald Reagan Medical Center at the University of California.
Her mother, actress Debbie Reynolds, died the next day.