Osmond family members have notified ET that Marie Osmond's son Michael Blosil leapt to his death Friday night in Los Angeles. Contacted by phone this morning, Donny Osmond tells us: "Please pray for my sister and her family."

Here are the details: Michael, who was in his late teens and is one of Marie's eight children, died after jumping from his downtown Los Angeles apartment at about 9 p.m. on Friday night. He left a note explaining he intended to commit suicide due to his life-long battle with severe depression that left him, he said, feeling as if he had no friends and could never fit in.

We're told that his mother Marie, who helped him fight the condition throughout his life, is devastated by the loss. Donny and Marie's Las Vegas show has been cancelled tonight.

Keep checking http://www.cbspressexpress.com/siteadmin/actions/www.ETonline.com for more on this developing story.

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