Lucy-Bleu Knight’s cause of death has been revealed over a month after her stepdad, Slash, announced she had died at 25.

The Post exclusively reported that the Los Angeles Medical Examiner’s Office determined the makeup artist had died from hydrogen sulfide toxicity. The manner of death was suicide.

Hydrogen sulfide is a poisonous, flammable gas that can be fatal to humans if exposed for too long, according to the Centers for Disease Control and Prevention.

Guns N’ Roses guitarist Slash’s stepdaughter Lucy-Bleu Knight died by suicide, according to The Post. Meegan Hodges/Instagram
The Los Angeles Medical Examiner’s Office confirmed Thursday that Knight died from being exposed to the toxic gas, hydrogen sulfide. Lucy-Bleu Knight

Symptoms of acute exposure include nausea, headaches, disorientation or confusion, memory loss, disturbed equilibrium, convulsions and more.

The coroner’s office further told the outlet, “Ms. Knight was found unresponsive in a private residence on July 19 by law enforcement conducting a welfare check. Death was pronounced at 1500 hours.

“An examination was performed by a deputy medical examiner on July 22. The cause of death was certified on August 29.”

The coroner’s report confirmed she was found unresponsive in a private residence on July 19. Instagram / Lucy-Bleu Knight
She was 25 years old. Lucy-Bleu Knight

The Guns N’ Roses guitarist, whose real name is Saul Hudson, announced his stepdaughter’s death on his Instagram page on July 21.

In the gutwrenching post, he described Lucy-Bleu as “a talented artist, a passionate dreamer, and a charming, lovable, sweet soul.”

In a follow-up message from July 27, the 59-year-old rocker shared a selfie of Lucy-Bleu and expressed how heartbroken he was over her death.

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Slash announced the death of the “charming, lovable, sweet soul” on Instagram on July 21. Facebook
In a second message he shared on July 27, the iconic guitarist said his “heart is permanently [sic] fractured.” Instagram / @slash

“My heart is permanently [sic] fractured. I will never ever stop missing you & remembering what a beacon of happiness, laughter, creativity & beauty you have always been. & still are,” he penned.

“The brightest light in the lives of so many that loved you so much. I find solace in the hope that you are at peace now. I will love you eternally.”

Lucy-Bleu was the daughter of Slash’s longtime partner, Meegan Hodges.

Hours before her death, she shared an apology message on Instagram alongside a selfie.

Lucy-Bleu was the daughter of Slash’s longtime partner, Meegan Hodges. Meegan Hodges/Instagram
Lucy-Bleu shared a heartbreaking message on Instagram hours before her death in which she apologized for having too big of an ego. Lucy-Bleu Knight/Instagram

“Whether I made you feel excluded, manipulated/ controlled you, told you to quit your day job from the comfort of being financially supported by my parents, or drowned real issues in toxic positivity-I am sorry,” she said.

“Countless missed opportunities and connections due to a disgustingly big ego, insecure heart and fear of being vulnerable.”

She chillingly concluded, “May my soul learn to evolve from my poor job at being Lucy-Bleu. Peace🌷.”

If you or someone you know is affected by any of the issues raised in this story, call or text the Suicide & Crisis Lifeline at 988.

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