Presley Gerber, the son of supermodel Cindy Crawford and businessman Rande Gerber, died on Sunday at an undisclosed rehabilitation facility. He was 27 years old.

Gerber was also the brother of model and actress Kaia Gerber. His family released a joint statement expressing their grief and requesting privacy. "The family is asking for privacy during this very difficult and painful time," the statement read.

Presley Gerber had been open about his struggles with substance abuse and mental health in the past. He passed away at the age of 27.