Three months ago, the passing of Young and the Restless star Billy Miller were stunned to learn of the young actor's passing.

Entertainment Tonight reported this week that the Travis County Medical Examiner's office revealed that suicide was the cause of the 43-year-old actor's death.

His death came just two days before his 44th birthday, according to the reports.

At the time of the announcement of his death, his mother shared that Miller fought an ongoing battle with bipolar depression, leading many to wonder if his mental health battle was connected to his tragic death.

What happened?

According to the medical examiner's office, Miller died by suicide at his home in Austin, Texas. His death was reported in September.

Daytime Emmy-winning soap veteran Billy Miller died in September, two days before his 44th birthday. His cause of death has now been confirmed. https://t.co/rIVK9NkYgJ

— Breitbart News (@BreitbartNews) December 6, 2023

Entertainment Tonight noted:

The report states, per the outlet, Miller was found in the bathtub of his home and was pronounced dead at the scene. The document stated that letters specifying intent were also recovered. Additionally, it was confirmed he suffered from bi-polar disorder and depression.

"He fought a long hard valiant battle with bipolar depression for years," said his mother, Patricia, at the time of his death.

She added, "He did everything he could to control the disease. He loved his family, his friends and his fans but in the end the disease won the fight and he surrendered his life."

"We all loved him so much and are desperately trying to deal with our loss. I will have nothing further to say. Thanks for the love and support."

Social media tributes

Miller, given his role as a popular actor on the hit daytime soap opera, was grieved by family, friends, and fans around the world.

"Too many feelings," co-star Chrishell Stause wrote in a social post at the time, "but you are gone way too soon and I'm so happy I got to work with you all those years, but also call you a friend. I hope you are at peace now."

I miss when I used to look forward to 2:00 when #BillyMiller was on the hospital show. I no longer miss the show. Now I just miss Billy💔💔💔#ForeverInOurHearts pic.twitter.com/p03f21MawD

— christy livingston (@christy041499) December 6, 2023

"This is the #BillyMiller I will cherish 4 the rest of my days! That smile, laughter! I don't need 2know the specifics of how he left us. I know he lost his battle w~ being bipolar & I don't need more! Fly high, sweet man! Pls know we love & adore you, forever & ever!" an X user wrote.