Actress Lisa Sheridan, who was best known for her appearance in CSI: Crime Scene Investigation, died at the age of 44.
Sheridan's director, Mitch Clem, confirmed his death at People.com on Wednesday.
"We all loved Lisa and we are devastated by the loss we all feel," said Mitch.
"She died Monday morning at home in her New Orleans apartment and we are waiting for a coroner's report on the cause of death."
"The family has unequivocally confirmed that it was not a suicide, and any suggestion to the contrary is absolutely 100% unfounded."
The actress's friends have since published tributes on social media.
Director Michael Dunaway wrote a tribute to the actress on Instagram.
See this post on Instagram
She called me Big Brother, and for all intents and purposes, I was. I met Lisa at the age of fourteen, over thirty years ago. We were immediately attached to the hip, real souls sisters from the first minute. For the rest of her life, she was a central part of mine. She was beautiful, obviously, and an extremely talented actor and a great friend, but more than anything, she really radiated that incredibly bright energy and life. Even in his dark moments. And she had a lot, especially in recent years. In recent years, she started telling me, "You are the biggest brother that a girl can have." That was how we ended each conversation. I cherished him then, and I cherish him even more now, knowing that I will never hear him again on this side of the river. So good night, sweet little sister. No one will ever be for me what you were and what you are. I try to comfort myself knowing that your struggles, your pain and your sorrow are "finally and finally behind you". I love you with all my heart, yesterday, today and forever. Sorry that I can not write more; it's still too painful.
"She called me Big Brother, and for all intents and purposes, I was. I met Lisa at the age of fourteen, more than thirty years ago, "he wrote.
"We were immediately tied to the hip, real soul mates from the first minute."
Actress Donna D'Errico spoke to Facebook to express her surprise at this news.
"It's so rare to find kind and gentle souls like hers in this industry, this city … even this world. Really one of the most truly sweet and kind people I have ever met in my life, "she wrote.
"She brought a sweetness and shining energy into every room she'd ventured into … even in her darkest moments."