‘Cardiac Arrest!’ Chilling Audio As Emergency Responders Called To Mac Miller's Home

Emergency responders knew immediately what was happening to Mac Miller, RadarOnline has learned. As RadarOnline.com has been reporting, the rap star died suddenly of a suspected overdose on Friday, Sept. 7.

Officials were apparently alerted after a male friend called 911 from inside Miller’s home.

“Immediate dispatch, cardiac arrest,” was the call to first responders.

But they were too late. Miller was pronounced dead at the scene. He was 26.

Miller had been battling substance abuse issues since his high profile breakup with singer Ariana Grande.

Just days after their two-year-relationship ended, a drunk Miller drove into a power pole in San Fernando Valley, and tried to flee the scene on foot. He was quickly caught and busted and charged with a D.U.I.

Sources tell RadarOnline.com Miller never got over the breakup, and watching Grande fall in love and get engaged quickly to comedian Pete Davidson pushed him over the edge.

“They were not on good terms at the end and to my knowledge they did not have closure," a source told RadarOnline.com.

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