Maries nephew David Osmond - son of the eldest Osmonds bandmember Alan - wrote on his Twitter page: 'My heart bleeds for my Aunt today. Life is precious. Love is all. An eyewitness who drove past the scene as paramedics arrived described events to US website RadarOnline. 'I saw four firemen standing here and they had a sheet held up, said Makenzie Arnone. 'There was caution tape all along the building here. A source also told the website how the emergency call reporting Michaels suicide came at 9.26pm on Friday. 'It was categorised as an extreme fall, the source said. 'Four units from the fire department were dispatched including a battalion chief, supervising paramedic unit, a fire truck and a paramedic unit. 'Once they arrived, they worked in coordination with the LAPD and the coroners field investigator. In November 2007, when he just 16, Michael entered a rehab facility. At the time, Marie said: 'My son Michael is an amazing young man, shown through his courage in facing his issues. As his mother, I couldnt be more proud of him. In an interview with American magazine People in 2007, Maries long-time friend Lisa Hatch described Michael as a 'very quiet kid who played the drums on his mothers Christmas 2006 tour. It was thought he was overcoming his troubles after he successfully graduated from high school last year in Las Vegas. Last March, Marie said: 'I couldnt be more proud of him. Hes got a 3.9 GPA in high school. Hes looking at scholarships to some wonderful colleges. A source close to Marie, 50, who has enjoyed a resurgence in her career thanks to an appearance on the US show Dancing With The Stars, said: 'She is in pieces. She is as devastated as you can imagine. 'She did everything she could to help Michael but sometimes everything is not enough. The singer split from Michaels father Brian in 2007 after 20 years of marriage. She admitted her marriage split had been difficult for Michael: 'Those kinds of thin gs are really very hard for a teenager to deal with. Marie is also mother to three biological children Stephen, Rachael and Lauren and four remaining adopted children Jessica, Brandon, Brianna and Abigail. The Osmonds, a tight-knit Mormon family who donate ten per cent of their earnings to the Mormon Church, found fame singing together in the Seventies with hits such as Paper Roses and Crazy Horses. Together with Maries brothers Virl, Tom, Alan, Wayne, Merrill, Jay, Donny and baby brother Jimmy, the family built up an estimated 50million fortune.