22 year old Bobbi Kristina, died at a hospice on July 26, six months after she was found unresponsive in a bath.
The Fulton County Medical Examiner’s office in Atlanta released an initial statement ahead of the full post-mortem report, eight months after her death.
A judge in Atlanta issued an order on Thursday to unseal the report, following requests from the media.
The medical examiner’s office said it reviewed medical records, investigative files and other documents to determine how Brown died.
The exam concluded cannabis and alcohol were involved in her death, along with medication used for sedation or to treat anxiety, citing the “underlying cause” of death as “immersion associated with drug intoxication”.
The statement said: “Death was clearly not due to natural causes, but the medical examiner has not been able to determine whether death was due to intentional or accidental causes, and has therefore classified the manner of death as undetermined.”