The cause of death of Bobbi Kristina Brown was “immersion associated with drug intoxication”, medical records show.

The 22-year-old daughter of Whitney Houston 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 Bobbi Kristina Brown’s death.

A judge in Atlanta issued an order on March 3 to unseal the report, following requests from the media.

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The medical examiner’s office said it reviewed medical records, investigative files and other documents to determine how Bobbi Kristina 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.”

The state reportedly requested the post-mortem documents originally be sealed in September 2015 in order to protect an ongoing investigation into Bobbi Kristina Brown’s death.

Media lawyers argued the sealing order should be lifted because it was made without a public hearing, in violation of the long-standing rules that post-mortem results are public records.

“We would hope that news agencies and the media receiving the report would do so with the discretion and dignity a family who has lost a loved one deserves,” said district attorney Paul Howard, who argued for the sealing of the report last year.

“Our investigation into the death of Bobbi Kristina Brown will continue.”

Bobbi Kristina Brown was the only child of Whitney Houston and Bobby Brown.

She was buried in August at the Fairview cemetery in Westfield, New Jersey, next to her mother.

Whitney Houston drowned in a bath in 2012 on the eve of the Grammy Awards ceremony.

Bobbi Kristina Brown’s cause of death has been determined, but officials say they will not reveal the post-mortem results.

They say a court in Georgia ordered a medical examiner to seal the results.

Whitney Houston’s daughter died at the age of 22 at a hospice on July 26, six months after she was found unresponsive in a bath in her Atlanta flat.

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The singer also drowned in a bath in 2012.

Whitney Houston died at a Los Angeles hotel on the eve of the Grammy Awards ceremony.

In a statement, the Fulton county medical examiner said Bobbi Kristina Brown’s post-mortem results would not be publicly released on the order of the Fulton county superior court.

“The Fulton County medical examiner has classified the cause and manner of Bobbi Kristina Brown’s death,” it said.

Bobbi Kristina Brown was the only child of Whitney Houston and Bobby Brown.

She was buried in August at the Fairview cemetery in Westfield, New Jersey, next to her mother.

According to the medical examiner, initial tests on Bobbi Kristina Brown have found no significant injuries and no obvious underlying cause of death.

Whitney Houston’s daughter died on July 26 at the age of 22.

Bobbi Kristina Brown had been in a coma since being found face down and unresponsive in a bathtub at her Atlanta home on January 31.

Whitney Houston was found dead in a hotel bathtub in Los Angeles in February 2012.

Bobbi Kristina Brown was found by her partner Nick Gordon.

A police report described Bobbi Kristina Brown’s death as a “drowning” although it is unclear what led to it.

Bruising was found on the front of her body at the time. Authorities later said she had sustained injuries in a car crash several days earlier, saying they were not the result of foul play.

Fulton County Medical Examiner’s Office said the time that had elapsed from when Bobbi Kristina Brown was found in January will “complicate” its effort to reconstruct events.

It said the initial portion of the post-mortem had been completed and there were no signs of “an obvious underlying cause of death”, no significant injuries and no previously unknown medical conditions.

Bobbi Kristina Brown’s cause of death would not be announced until all tests have been conducted, it added, saying that could take “several weeks”.

A spokeswoman for her family said she died on Sunday surrounded by her family and was “finally at peace in the arms of God”.

Dionne Warwick, Whitney Houston’s cousin, described Bobbi Kristina Brown as “a sweetheart”.

“She will be missed, that’s for sure. She was a good girl. She was a good little girl. She really was,” she told the Bravo TV network.

The day before Bobbi Kristina Brown was found in the bath, she had tweeted: “Let’s start this career up&&moving OUT to TO YOU ALLLL quick shall we !?!???!”

Bobbi Kristina Brown began performing with her mother as early as 1999, singing duets of My Love is Your Love and recording Little Drummer Boy for a holiday album in 2003.