Robert De Niro’s grandson Leandro De Niro Rodriguez‘s cause of death has been revealed.
The 19-year-old died from a “toxic” combination of illicit drugs, the New York City Medical Examiner told Page Six Tuesday.
According to the autopsy results, Leandro had fentanyl, bromazolam, alprazolam, 7-aminoclonazepam, ketamine and cocaine in his system at the time of his death, which was ruled an “accident.”
The woman who was arrested in connection to the late teen’s overdose allegedly warned him about the fentanyl-laced pills she’s believed to have sold him.
According to the criminal complaint obtained last month by Page Six, cops discovered texts between Sophia Marks, 20, and Leandro regarding the purchase of counterfeit oxycodone and Xanax just days before his death.
Police claim Marks allegedly sold pills to children as young as 15.
On July 2, Drena De Niro made the heartbreaking announcement that her son, whom she shared with graffiti artist Carlos Rodriguez (aka Mare139), had died.
“You have been my joy my heart and all that was ever pure and real in my life,” she wrote in an Instagram tribute.
“I wish I was with you right now. I wish I was with you. I don’t know how to live without you.”
The Daredevil Films founder lamented that she wished her “love alone could have saved” her only child.
“I’m so sorry my baby,” she continued. “Rest in Peace and Eternal Paradise my darling boy.”
Meanwhile, Carlos, whom Drena tagged in her post, shared a photo of a black square on his own account — and left the caption section blank.
Law enforcement sources told TMZ that Leandro was found dead sitting in a chair by a friend who was checking in on him after not having heard from him for a few days.
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Following Leandro’s unexpected passing, a “deeply distressed” Robert issued a statement reacting to the tragic news.
“I’m deeply distressed by the passing of my beloved grandson Leo,” the actor, 79, said in a statement to Page Six via his rep.
“We’re greatly appreciative of the condolences from everyone. We ask that we please be given privacy to grieve our loss of Leo.”
Meanwhile, an “inconsolable” Drena seemed pretty certain she knew what killed her son.
“Someone sold him fentanyl laced pills that they knew were laced yet still sold them to him,” she previously claimed on Instagram in response to an inquiring commenter.
“For all these people still f–king around selling and buying this s–t, my son is gone forever.”
Leandro was laid to rest on July 8.
Both Drena and her late son lived in Manhattan and celebrated Mother’s Day together.
“Today was a good day,” Drena captioned an Instagram post during the May holiday.
Drena, 51, is the eldest of the “Goodfellas” star’s seven children. He adopted her in 1976 when he married her mother, Diahnne Abbott. Drena took her then-stepdad’s surname at the time.
Robert, 79, and Abbott, 78, called it quits in 1988, more than a decade after they welcomed son Raphael, now 46.
The Oscar winner is also the father to twins Aaron and Julian, 27, with ex Toukie Smith, as well as Elliot, 25, and Helen, 11, with Grace Hightower.
Robert and girlfriend Tiffany Chen welcomed a baby girl named Gia in April.
