A cause of death for Rich Homie Quan, the Atlanta rapper who died last month at the age of 34, has been revealed.

Quan, born Dequantes Devontay Lamar, died of an accidental drug overdose, the Fulton County Medical Examiner’s Office confirmed to USA TODAY Wednesday. The manner of death was ruled an accident.

Numerous drugs were found in Quan’s system, including fentanyl, alprazolam, codeine, promethazine and THC, according to an autopsy report. Additionally, the rapper’s body showed no signs of trauma upon examination.

Quan, best known for his 2013 breakout hit “Type of Way,” died Sept. 5 at an Atlanta hospital, according to Rolling Stone and The Associated Press. The rapper’s family told TMZ at the time that they were “shattered and heartbroken” by Quan’s death.

On the day of his death, Quan was reportedly found lying on the floor with food in his mouth by his brother, according to an incident report obtained by People magazine. Quan’s brother told police that he subsequently picked the rapper off the floor and placed him on the couch.

An unnamed woman later called police after noticing Quan’s body was cold and that the rapper was not breathing, per People.