25-year-old Battle was a singer in the girl group "GRL" which was the reboot of the Pussycat Dolls. She signed on with the group after her run on "X Factor" where she was a finalist, making it into the top 17.
The L.A. County Cororner's Office tells us Battle's autopsy has not been completed yet ... so, nothing has been ruled out as cause of death.
Simone's father told us she was found in the bedroom of her apartment in a West Hollywood neighborhood. He described her home as a guest house of a larger residence.
Sidebar: Such a sad week. RIP Simone.