Mac Miller made the announcement this afternoon.
Mac Miller has officially cancelled his scheduled appearances at both the "Sasquatch! Music Festival" and the "Soundset 2017" festival. The Divine Feminine rapper took to Twitter to announce the cancellation, and while he did not officially give a reason, it's most probably linked to the recent tragedy that occurred during girlfriend Ariana Grande's Manchester concert.
Mac sent love to his fans, who will no doubt support and understand his decision. As of now, there's no word if he plans on cancelling his upcoming summer tour dates.