Chief Keef was arrested for a DUI on March 5th, only two weeks after leaving rehab.
Sosa was apparently pulled over for "having expired tags on his 2010 Jeep Cheroke", but sources indicate that the officers detected the scent of marijuana pretty quickly after approaching the vehicle. In fact, Keef was said to be open about the fact that he had smoked before operating the vehicle.
The rapper then took a field sobriety test, which he failed, and was arrested on sight, brought in not only for a DUI, but also "driving on a suspended license" and having no proof of insurance.
Keef was released shortly thereafter on $300 bail.
No word on how this arrest slipped through the cracks. Take a look at Keef's mughot in the gallery above, and watch his most recent video for "Make It Count" here.