Actress Carrie Fisher had cocaine in her system when she died, an autopsy has found.
The Princess Leia actress also had trace amounts of morphine and ecstasy in her system.
The autopsy reveals that Fisher could have taken cocaine in the days leading up to her cardiac arrest onboard a flight from London to the US.
It is not clear whether the drugs contributed to her death.
Last week a coroner ruled that Fisher had died from sleep apnoea – a condition whereby air cannot get into the lungs properly during sleep or when you are unconscious.
“Based on the available toxicological information, we cannot establish the significance of the multiple substances that were detected in Ms Fisher’s blood and tissue, with regard to the cause of death,” the report states.
The coroner found Fisher also had a buildup of fatty tissue in her arteries, a common cause of cardiac arrest.
The actress’s battle with substance abuse and mental health issues had been well documented.
She did several stints in rehab, and spoke powerfully about her struggles in public in a bid to highlight the issues.
The star died on 23 December, followed by her mother Debbie Reynolds just a day later.
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Family spokesman Simon Halls confirmed the news in a statement to PEOPLE at the time.
He said: “It is with a very deep sadness that Billie Lourd confirms that her beloved mother Carrie Fisher passed away at 8:55 this morning,” reads the statement.
“She was loved by the world and she will be missed profoundly,” says Lourd. “Our entire family thanks you for your thoughts and prayers.”
Fisher had been on tour promoting her latest book, The Princess Diarist, when she died.
Fisher left Hollywood in 1973 to study acting at the Central School of Speech and Drama in London.
She got a role in Star Wars in 1977, at just 19 years old.
The film propelled her to international fame.
Fisher also starred in 1980s films The Blues Brothers, The Man with One Red Shoe, Woody Allen’s Hannah and Her Sisters and, later, When Harry Met Sally.