Charlotte Dawson, a former model and the host of Australia’s Next Top Model, has been found dead. She was 47. The ANTM star had a history of depression and was admitted into hospital after online abuse triggered her to attempt suicide in 2012. She had taken prescription tablets with wine and tweeted: "you win" in a suicide note to her cyber attackers. After receiving abuse on Twitter, Dawson became an advocate against online bullying. Following her own experiences, she started a massive anti-abuse campaign, spreading her efforts across television, radio, magazines and newspapers and, of course, twitter.

Charlotte Dawson, Horrible Bosses Australian Premiere
Dawson used her own experiences with bullying and depression to help others in a similar situation.

About her death, police say there were no suspicious circumstances, which means the most likely cause is suicide. Dawson was found hanged in her Sydney apartment on Saturday, Sydney’s The Sunday Telegraph reports. The Sun-Herald newspaper in Sydney reported Sunday that her body was found only minutes before her luxury waterside apartment was due to be sold at auction.

Charlotte Dawson
The suspected cause of death is suicide.

In her 2012 biography, Dawson openly revealed her struggles with mental health, admitting that she was frequently visited by the “depression bogeyman.” Her death has caused another surge in the debate against online bullying and hateful material. Kate Carnell, chief executive of Beyond Blue, a not-for-profit organization promoting depression awareness, criticized Twitter for failing to sign up to an Australian government complaint-handling program designed to remove hateful material from social media.

"There's lots more work that people like Twitter need to do," Carnell told The Sun-Herald.

Dawson used her social media profiles as a platform to lobby for various causes.