The New York City medical examiner has ruled the death of Sir Mick Jagger's long-term girlfriend L'Wren Scott a suicide.

A post mortem completed today on the body of the 49-year-old fashion designer found that she died of hanging.

She was discovered dead in her Manhattan apartment Monday morning. She did not leave a suicide note.

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The Stones cancelled their seven-date tour of Australia and New Zealand after Scott's death.

Jagger called Scott his "lover and best friend" in a Facebook tribute. He said he was struggling to understand why she might have taken her own life.

Members of the Rolling Stones are offering support to Sir Mick. Keith Richards said in a statement that "no one saw this coming" and that Sir Mick has "always been my soul brother and we love him".

He added: "We're thick as thieves and we're all feeling for the man."

Charlie Watts said their "first thought is to support Mick at this awful time". Ronnie Wood echoed Watts' statement, adding: "we intend to be back out on that stage as soon as we can".

Ms Scott had been at the Stones frontman's side since 2001.