Atlanta, July 27 (IANS): There will be an investigation into the "non-natural" death of singer and reality TV star Bobbi Kristina Brown, who was in a medically induced coma since six months after being found unresponsive in a bathtub.

The 22-year-old daughter of late Whitney Houston breathed her last on Sunday night.

"The death of Bobbi Kristina Brown has been reported to the Fulton County Medical Examiner's Office in accordance with state death investigation laws requiring investigation of known or suspected non-natural deaths.

"Because the events at her home leading to her death occurred in Fulton County (Roswell), her death has been reported to the Fulton County Medical Examiner for determination of the cause, manner, and circumstances of death. Despite the long interval between her being found unresponsive and her death, an autopsy will still be necessary to further evaluate possible causes of death or contributing factors," the Fulton County Medical Examiner said in a statement, reports people.com.

The statement added that the months between the January incident and Bobbi Kristina's death will "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."

There might also be additional lab testing needed, which can take up to several weeks.

Additionally, according to the statement, the Roswell Police Department "continues its investigation into the circumstances preceding and surrounding the time of the original incident leading to her death".