Rosie O'Donnell is heartbroken following the passing of her ex-wife, Michelle Rounds, who was found dead in her Florida home Monday (September 11). She was 46.

"I am saddened to hear about this terrible tragedy," O'Donnell told Entertainment Tonight. "Mental illness is a very serious issue affecting many families. My thoughts and prayers go out to Michelle’s family, her wife Krista, and their child.”

TMZ reported that Rounds' death was a suicide. However, a spokesperson for the Orange County Sheriff’s Department shared, “They are not calling this a suicide at this time. They are calling it a death investigation. We are waiting for the autopsy to come back."

O'Donnell and Rounds were married between 2012 and 2015, when they divorced. They share a 4-year-old daughter together, named Dakota.

Rounds' family will reportedly hold a private memorial.

Stars We Lost in 2017:

More From KISS FM 96.9