Officials are addressing what led to the untimely death of Robert De Niro's grandson Leandro De Niro Rodriguez.

The 19-year-old died from an accidental drug overdose, the New York City's chief medical examiner confirmed to TMZ Aug 8. More specifically, his cause of death is attributed to the "toxic effects of fentanyl, bromazolam, alprazolam, 7-aminoclonazepam, ketamine, and cocaine."