Through her rep, Marie Osmond released a statement Saturday. It says, “My family and I are devastated and in deep shock by the tragic loss of our dear Michael and ask that everyone respect our privacy during this difficult time.”
According to ET, Michael left a note explaining he intended to end his life after a lengthy battle with severe depression that left him, he said, feeling as if he had no friends and could never fit in.
In 2007, Michael, then 16, entered a rehab facility. His mother said at the time, "My son Michael is an amazing young man, shown through his courage in facing his issues. As his mother, I couldn’t be more proud of him."
The reason for the visit to rehab was never disclosed. Michael is one of eight children Osmond has raised with ex-husband Brian Blosil.
By March 2009, Marie told PEOPLE that Michael seemed to be turning his life around. He was finishing up his last year of high school while living with his mom in Las Vegas, where she and Donny headline a show.
"I couldn't be more proud of him," Marie said at the time. "He's got a 3.9 GPA in high school. He's looking at scholarships to some wonderful colleges."
A rep for Donny and Marie Osmond confirmed to PEOPLE that the show at the Flamingo Hotel was canceled Saturday night. It is being determined how long the hiatus will remain in effect.
Marie Osmond, one of nine Utah-bred Osmond siblings, began performing with her brothers at age 3. She has been outspoken about the trials of her own life in the spotlight.
In her 2001 memoir Behind the Smile, she detailed her battle with postpartum depression following the birth of her son Matthew. She also revealed that she had been sexually abused as a child.
She did not identify her abusers but said they were not family members.
In 2006, Marie's rep denied that the singer had tried to commit suicide, attributing reports about Osmond to the postpartum she suffered.
With reporting by MARK GRAY and BLAINE ZUCKERMAN