Mac Miller, the platinum-selling hip-hop star who earned kudos from the likes of Jay-Z and Chance the
rapper, and drew headlines for his relationship with singer
Ariana Grande, has died at the age of 26.
His family said in a statement that Miller died but gave no further details.
Los Angeles County coroner's spokeswoman Sarah Ardalani says the 26-year-old Miller - whose real name was Malcolm McCormick - was found unresponsive in his home in the Studio City suburb of Los Angeles and declared dead shortly before noon on Friday, local time.
Investigators said they would need an autopsy to determine how he died.
Miller and Grande collaborated on her first top 10 hit, the multi-platinum, The Way, which propelled her from teen TV stardom to pop star, and they dated for two years before their relationship ended in May.
She later called it a "toxic" relationship on Twitter.
Not long after, he was charged with drunk driving and hit-and-run after police said he struck a power pole and fled the scene. His blood alcohol was reportedly twice the legal limit.
"I made a stupid mistake. I'm a human being," Miller said in July.
"But it was the best thing that could have happened. I needed that. I needed to run into that light pole and literally have the whole thing stop."
While Miller didn't have a hit on Top 40 radio, he had a strong following on streaming networks and even had an album debut at No 1 on the top 200 albums chart.
He often alluded to his battles with addiction over the years and had collaborations with numerous performers, including Kendrick Lamar, Lil Wayne and Ty Dolla $ign.
He released his fifth, full-length album Swimming last month, with Variety calling it "a simple, stately, poetic autobiography."
He was due to start a tour at the end of next month that he promised would be special every night. On Thursday he tweeted: "I just wanna go on tour."
The Pittsburgh native, born Malcolm McCormick, rose to fame with a frat-rap attitude in his mix-tapes like Best Day Ever and his full-length album debut, 2011's Blue Slide Park. His more goofy songs included Nikes on My Feet, Kool Aid & Frozen Pizza and Knock Knock.
One of his biggest songs was the 2011 platinum-certified mix-tape track Donald Trump, which prompted a feud with the future president.
He asked his fans not to vote for Trump, who was flirting with the idea of running for president then, and publicly supported the Black Lives Matter movement.