The overdose was determined to be accidental.
The 25-year-old actor died at his family’s home in Oakland, California, on July 31. At that time, his family said that the actor, who played Fezco on the HBO series, was struggling with grief over the death of his father a week prior.
“Last week he buried his father and intensely struggled with this loss,” the family said in July. “The only comfort we have is knowing Angus is now reunited with his dad, who was his best friend. Angus was open about his battle with mental health and we hope that his passing can be a reminder to others that they are not alone and should not fight this on their own in silence.”