Bobbi Kristina Brown on August 16, 2012 in Hollywood, Calif.
Jason LaVeris—FilmMagic
Updated: March 4, 2016 8:00 AM ET | Originally published: March 4, 2016 7:19 AM EST

Bobbi Kristina Brown died from a combination of drowning and drug intoxication, the Fulton County Medical Examiner’s office revealed in a statement on Friday.

Released on what would have been Brown’s 23rd birthday, the statement sheds light on her condition when she was found unresponsive in her bathtub on Jan. 21, 2015. (Brown spent months in the hospital, arehabilitation center and hospice care until she died on July 26.)

Ahead of the full autopsy release, the Medical Examiner’s Office in Atlanta said marijuana and alcohol were involved in the death, as well as sedative medications and drugs used to treat anxiety.

Previously, officials said her autopsy showed “no significant injuries” at the time of her “non-natural death,” but a court order kept the information sealed.

In a statement released in July, the medical examiner’s office indicated the months between the January incident and Brown’s death would “complicate reconstruction of the events surrounding her initial unresponsiveness. Interpretation of autopsy findings and other information will also be challenging. However, an autopsy could be helpful to address questions which may arise about the cause of her unresponsiveness and eventual death.”

Meanwhile, her boyfriend Nick Gordon, 20 – who was raised as Houston’s son, but never officially adopted – is in the midst of a legal battle with Brown’s family. A filing in a wrongful death lawsuit alleges Brown “died due to a violent altercation with Defendant (Gordon)” and that he “injected her with a toxic mixture” – claims that Gordon’s lawyers vehemently denied. In a statement to PEOPLE last month, Gordon’s legal counsel said he continued to “grieve privately” and was “dehumanized by the fictitious allegations.”

Brown’s best friend and former roommate Mason Whitaker reflected on the loss of the late Whitney Houston and Bobby Brown‘s only child in an interview with PEOPLE in February.

“Not a day goes by that I don’t think about her and the amazing influence she had on my life,” Whitaker said after the one-year anniversary of her near-drowning. “Her vibrant spirit will live on forever. It devastates me to think the world won’t be able to experience the amazing person she was.”

With reporting by Elissa Rosen

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