Bobbi Kristina Brown’s Cause Of Death Revealed

"The underlying cause of death for Bobbi Kristina Brown is the condition which starts the downhill course of events leading to death and in this case is the immersion associated with drug intoxication," the office said in a statement.

"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 medical examiner has said Bobbi Kristina Brown's face being immersed in water, along with drug intoxication, led to her death.

The daughter of Bobby Brown and the late Whitney Houston died at a hospice last July.

She had been in a coma after being found face-down and unresponsive in a bathtub at her home in Atlanta six months earlier.

The Fulton County Medical Examiner's office in Atlanta released a statement on Friday on the death as it prepares to release the full autopsy report.

It said marijuana and alcohol were involved in the 22-year-old's death, along with medications used for sedation or to treat anxiety.

However, it said it was not possible to determine whether she meant to take her own life.

A court order had prevented details of the cause of death from being released.  But that was lifted on Thursday by a judge following requests by the media.