Chief Keef has been jailed after a positive test for pot in a court-ordered drug test.
According to DNAInfo Chicago, the Chicago rapper's failed test lands him in Cook County Jail for a 20-day stint.
The test is part of the 18-year-old's conditional discharge for driving 55 mph over the speed limit last May, speeding along Edens Expressway outside Chicago at 110 mph before being caught.
In an Instagram post, the budding artist revealed that he was about to "get locked up," and thanked fans for their support.
Authorities said that the rapper, real name Keith Cozart, will undergo a drug rehabilitation program while serving his sentence.
Chief Keef has had a number of run-ins with the law in his time in the spotlight, including multiple arrests for marijuana possession. Early last month, he was sued for not paying rent on his Chicago mansion.
The rapper, whose "Love Sosa" peaked at No. 56 on the Hot 100 and who featured on the "Yeezus" track "Hold My Liquor," will begin working on a new album upon his release.