Chief Keef — ARRESTED in Atlanta

Exclusive 0521_chief_keef_mugChief Keef — the 17-year-old rap sensation — was arrested in DeKalb County, Georgia yesterday for disorderly conduct … our sources has learned.

The details surrounding the arrest are unclear.

According to the booking sheet, Keef — real name Keith Cozart — was listed at 5″9″ and 160 lbs.

After the arrest, Keef tweeted, “Jus Got Out Of Dekalb County jail In Atlanta Mad As f**k.”

Keef is considered a prodigy — and has rapped with huge stars like 50 Cent and Wiz Khalifa.

Keef is no stranger to the law … he”s been arrested at least two times before — and even has a gun conviction under his belt.

It”s been a rough year for the rapper … We broke the story, he was recently sued for child support​ by his middle-school-aged baby mama who claimed Keef fathered her kid — born in 2011 — when he was only 15.