They also found heroin, other opiates and MDMA, or ecstasy, in the actress's body.
Carrie Fisher had cocaine and other drugs in her system when she became ill on a plane last year, according to her autopsy report, but investigators could not determine what impact they had on her death.
The report released Monday states that Fisher may have used cocaine three days before the Dec. 23 flight on which she became ill. Four days later she died.
It also says traces of heroin, other opiates and MDMA, or ecstasy, were found, but they could not determine when Fisher used those drugs. The findings are based on toxicology tests done on samples taken when the “Star Wars” star was admitted to a hospital in Los Angeles.
Coroner's authorities declared Fisher died of sleep apnea and a combination of other factors. A news release issued Friday mentions that drugs were found in her system, but does not provide details.
The full report released Monday contains a detailed explanation of the results, including why investigators believe Fisher used cocaine at least three days before her flight.
“At this time the importance of cocaine cannot be established in this case,” the report says.
He also notes that while heroin was detected in her system for a brief period of time, investigators were unable to determine when Fisher used the drug or ecstasy. Toxicology tests found other opiates in Fisher's system, including morphine, although the report said the morphine may have been a byproduct of the heroin.
Fisher suffered what appears to be a heart attack on the plane accompanied by vomiting and a history of sleep apnea. "Based on the available toxicological information, we cannot establish the significance of multiple substances that were detected in Ms. Fisher's blood and tissue with respect to the cause of death," the report says.
Among the factors that contributed to her death was a buildup of fat on the walls of her arteries, the coroner's office said last week.
The actress's brother, Todd Fisher, did not immediately return a message seeking information.
Todd Fisher said Friday that he was not surprised that drugs contributed to her sister's death.
“I would tell you, from my perspective, it's certainly not news that Carrie did drugs,” Todd Fisher said. He recalled that her sister wrote extensively about her drug use and said that many of the drugs she used were prescribed by doctors to treat her mental health problems.
Fisher struggled for years with drug addiction and mental health issues. She said that she smoked marijuana at age 13, she used LSD before she was 21 and that at 24 she was diagnosed with bipolar disorder. She was treated with electroconvulsive therapy and medications.
He added that her sister's heart condition was probably worsened by her smoking habit as well as the medications she was taking.
