Breaking: Cindy Crawford's son dies aged 27

American supermodel Cindy Crawford's son, Presley Gerber, has died aged 27.

Gerber's death was listed on the Los Angeles County Medical Examiner portal as having occurred at a rehab facility on Sunday, local time.

Several US media outlets also reported that a representative of the family had confirmed the death and had asked for the family's privacy to be respected.

The 27-year-old was the only son of Crawford and her businessman husband, Rande Gerber, and the older brother of model-actor Kaia Gerber.

Gerber's Instagram profile, where he had previously documented his battle with mental health and sedative use, was flowing with tributes on Monday.