Mac Miller Hosted Wild All-Night Party Before Suspected Overdose

Mac Miller hosted a wild all-night party before his suspected overdose death, RadarOnline.com has exclusively learned.

According to a source, the rap star had a chaotic bash at his Studio City, Calif. home on Thursday night, just hours before he was found dead on Friday, Sept. 7.

"Thursday he had a party in which there was lots of noise and commotion," an insider told RadarOnline.com.

"Guests were coming in and out all night, making noise and breaking bottles out back."

Some didn't leave until Friday morning, RadarOnline.com's spy claimed.

But the source didn't think anything of it, because Miller, 26, "always had shady characters coming over throughout the night, so when we saw people and heard noise, it wasn't out of the ordinary."

All hell broke loose, however, later in the day on Friday, when the singer's body was found in a bedroom at his house.

Authorities were 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.

Miller had allegedly been battling substance abuse issues since his high profile breakup from singer Ariana Grande in May.

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

Miller's body was taken away by the Coroner on Friday afternoon.

Keep reading RadarOnline.com for more developments on Mac Miller's death!

We pay for juicy info! Do you have a story for RadarOnline.com? Email us at tips@radaronline.com, or call us at (866) ON-RADAR (667-2327) any time, day or night.

Get the exclusive celebrity scoop on all the stars you love before any of your friends by subscribing to our new podcast Straight Shuter below!