Welsh singer Duffy has revealed that she was "raped and drugged and held captive over some days" in a post on Instagram.
It is unclear when the ordeal occurred and the Grammy-winning singer said she has spent the years since recovering from the ordeal.
She said that she is “OK and safe now,” adding that the sun is finally shining for her again.
The 35-year-old had a UK number one album with ‘Rockferry’ in 2008.
She won three BRIT awards and a Grammy for the album – which included the hits Warwick Avenue, Mercy and Stepping Stone.
She said she it finally feels like the right time to speak out about her ordeal.
“The truth is – and please trust me I am ok and safe now – I was raped and drugged and held captive over some days,” she said.
“Of course I survived. The recovery took time. There’s no light way to say it. But I can tell you, in the last decade, the thousands and thousands of days I committed to wanting to feel the sunshine in my heart again, the sun does now shine.”
The singer has only been seen intermittently since the release of her second album 'Endlessly' in 2010.
“You wonder why I did not choose to use my voice to express my pain?” she wrote.
“I did not want to show the world the sadness in my eyes. I asked myself, how can I sing from the heart if it is broken?
“And slowly it unbroke. In the following weeks I will be posting a spoken interview. If you have any questions I would like to answer them, in the spoken interview, if I can.
“I have a sacred love and sincere appreciation for your kindness over the years. You have been friends. I want to thank you for that x.”
The Dublin Rape Crisis Centre's 24-hour helpline can be reached on 1800 77 88 88.