Simone Battle, G.R.L member and former X Factor contestant, took her own life, a coroner in Los Angeles has confirmed.
The 25-year-old was found hanged in her West Hollywood home on Saturday (6 September).
"Words cannot express the depth of our loss. Simone's incredible talent was only surpassed by the size of her heart," the band’s remaining members tweeted in tribute.
However, they have since insisted that they will "carry her memory with us in everything we do".
Their scheduled gig at the Marquee nightclub in Las Vegas, set to take place Monday (8 September) evening, has been cancelled following the tragic news.
"Such tragically sad news to hear of the passing of Simone Battle," X Factor judge Cheryl Fernandez-Versini commented on Twitter.
Her tribute was followed by fellow judge and show boss Simon Cowell, who said: "I am so sad to hear about the news Simone Battle has passed away.
I am so sad to hear about the news Simone Battle has passed away. She was such a fun nice person. It's such a loss. Rest in peace Simone.Simon Cowell (@SimonCowell) September 6, 2014
Such tragically sad news to hear of the passing of Simone battle.. My thoughts and prayers are with her loved ones #RIPSimoneCheryl (@CherylOfficial) September 6, 2014
"She was such a fun nice person. It's such a loss. Rest in peace Simone."
Californian singer Battle rose to prominence in 2011 after an appearance on the US version of X Factor, during which she made it through to the final 17.
Upon her elimination from the competition, Battle released her own song and then joined a girl group called G.R.L., which was initially supposed to be a reboot of Pussycat Dolls – with the same name – after those members disbanded in 2010.
G.R.L. is a five-piece girl group founded by Robin Antin, the choreographer who also formed the Pussycat Dolls.
The group began as their new incarnation G.R.L. in the beginning of 2013 and featured on rapper Pitbull’s song "Wild Wild Love" earlier this year, reaching number six in the UK charts in May.
G.R.L.’s record labels, RCA and Kemosabe, described Battle as an "exceptional young talent and human being".
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