The “No Tears Left to Cry” singer, 25, has not spoken out about her ex’s death, but her last Instagram post was made on Thursday when she took a short video of her hotel room in the United Kingdom.
“Bye London,” she wrote in the caption.
Miller, 26, was pronounced dead at 11:51 a.m. at his Studio City, California, home, the Los Angeles County Department of Medical Examiner-Coroner confirmed in a statement to PEOPLE.
A cause of death is yet to be determined, but a source tells PEOPLE the rapper had gone into cardiac arrest after appearing to suffer a drug overdose.
Grande and Miller, who struggled with drugs throughout his life, dated for two years before separating in May.
The split came as a shock to fans as Miller raved about the singer on Twitter in April after she released her single “No Tears Left to Cry.”
“Very proud of this girl right here. Welcome back. We missed You. One of a kind,” he tweeted at the time. Following their break-up, Grande dedicated an Instagram Story to the rapper in which she called him “one of my best friends in the whole world and favorite people on the planet.”
“I respect and adore him endlessly and am grateful to have him in my life in any form, at all times regardless of how our relationship changes or what the universe holds for each of us!” the singer wrote.
Grande’s fans came to her defense on Twitter writing it wasn’t the singer’s fault Miller had died.
“Just noticed Ariana Grande disabled comments on her Instagram account after a barrage of Mac Miller-related comments,” one user tweeted. “Recognize the true problem here, rather than using someone else as a scapegoat & continuing the cycle. All so sad & nauseating.”
Another shared the same sentiment, tweeting, “The amount of tweets blaming Ariana Grande for what happened to Mac Miller is disgusting, his addiction and lack of help is what drove this to happen, don’t point the finger and blame.”
A different fan wrote, “Ariana Grande is not responsible for Mac Miller’s death. Stop hating her. She’s a person like you who also has feelings. I’m sure she’s having a hard time. I wish patience to her and his family.”
Months before his death, Miller was arrested for drunk driving on May 14.
Early that morning, the rapper was arrested for DUI and hit and run after he struck a power pole in the San Fernando Valley with his Mercedes-Benz G-Wagon and fled the scene; after law enforcement officers matched the vehicle’s license plates to Miller’s address, they arrested him at his home, a Los Angeles Police Department public information officer previously told PEOPLE.
Following his arrest, a fan blamed Miller’s crash on Grande tweeted the rapper had “dumped him for another dude after he poured his heart out on a ten song album to her called the divine feminine” and called the album “the most heartbreaking thing happening in Hollywood.”
Grande responded directly, tweeting, “how absurd that you minimize female self-respect and self-worth by saying someone should stay in a toxic relationship because he wrote an album about them, which btw isn’t the case (just Cinderella is ab me).”
Her Twitter statement continued: “I am not a babysitter or a mother and no woman should feel that they need to be. I have cared for him and tried to support his sobriety & prayed for his balance for years (and always will of course) but shaming / blaming women for a man’s inability to keep his s— together is a very major problem.”
The rapper went on to open up about his arrest during a conversation with Zane Lowe on Beats 1 on Apple Music in July.
“I made a stupid mistake. I’m a human being,” Miller explained. “But it was the best thing that could have happened. Best thing that could have happened. I needed that. I needed to run into that light pole and literally have the whole thing stop.”
However, Miller went on to let all of his fans know that they shouldn’t worry about him, because he was doing fine.
“I have people that care about me and fans that love my music and it’s a beautiful relationship with them — people who have been with me through being a 19-year-old wide-eyed kid to being a self-destructive depressed drug user to making love music to all these different stages. Then they see something like that and they worry,” he explained. “So your first reaction is, ‘Let me tell them I’m cool.’ ”
During the interview, Miller also explained that both he and Grande had moved on since their split — and that he wished her well.
“I was in love with somebody. We were together for two years. We worked through good times, bad times, stress and everything else. And then it came to an end and we both moved on. And it’s that simple,” he said.
“It’s all positive energy,” he added. “I am happy for her and [the fact that she’s] moving forward with her life, just as I’m sure she is with me.”
If you or someone you know is in need of help, please contact the SAMHSA substance abuse helpline at 1-800-662-HELP.