Coroner: Dr. Dre's Son OD'd On Heroin And Morphine

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Dr. Dre's son, Andre Young Jr., died from an overdose of heroin and morphine, the Los Angeles County Department of Coroner confirmed to PEOPLE on Friday.

"This case has been closed, it's been ruled an accident due to morphine and heroin intoxication," coroner spokesman Larry Dietz told PEOPLE. The drug test results had been pending for four months.

Young, 20, was found unresponsive by his mother, Jenita Porter, 40, in their Woodland Hills, Calif., home on the morning of Aug. 23.

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