Mac Miller passed away on September 7th, 2018, at age 26. He was found in his home unresponsive. He died of an accidental overdose of Fentanyl, cocaine, and alcohol. He was discovered kneeling on his bed with his face resting on his knees. He had been struggling with sobriety for a long time and a source close to him says whenever he used drugs, he used them in excess. This combination of drugs caused Miller to go into cardiac arrest and he passed away.