Carrie Fisher had cocaine in her system before her death

Carrie Fisher had cocaine in her system when she fell ill on a plane last year, her postmortem examination report shows, but investigators could not determine what impact the cocaine and other drugs found in the actor's system had on her death.

The report, released on Monday, states that Fisher may have taken cocaine three days before the December 23rd flight on which she became ill. She died four days later.

Investigators also found traces of heroin and MDMA, which is also known as ecstasy, in her system, but they could not determine when Fisher had taken those drugs.

The findings were based on toxicology screenings done on samples taken when the Star Wars actor arrived at a Los Angeles hospital after becoming ill on the flight.