In a 911 call, obtained by the site, his friend pleaded for the dispatcher to "please hurry" with help.
According to TMZ, Mac Miller was dead for hours before his body was discovered on Friday (September 7) morning.
Recounting the exact moments he found out about Mac's death, Pasternak added, "One of the ladies who works with me walked in with kind of a blank look on her face and held up her phone and there was a news release [about Miller's death]".
An initial call for backup cited Mac's condition as "cardiac arrest", as the caller likely didn't know that Miller had already been dead for some time.
It's been almost a week since Mac Miller was pronounced dead.
Miller was born Malcolm McCormick in Pittsburgh, Pennsylvania, in 1992. There are no further details as to the cause of his death at this time'. Thank you for your prayers.
Ariana Grande (center right) and Mac Miller (far right) at the 2016 MTV Video Music Awards at Madison Square Garden in NY.
In multiple interviews Miller said he had started using drugs including cocaine and opiates when he was just 15 years old. They were introduced by pop singer Ariana Grande.