Charles Barkley

Charles Barkley has pleaded guilty to two misdemeanor charges related to a DUI arrest, and faces jail time.

The former NBA star, 45, is scheduled to begin a five-day jail sentence starting March 21, the Associated Press reports. He must also pay a $2,000 fine and attend an alcohol-treatment program, as well as install an ignition-locking device in his cars that requires sobriety for the engine to start. Barkley's lawyer was not immediately available for comment.

Barkley was arrested outside a Scottsdale, Ariz., nightclub Dec. 31 after failing a field sobriety test. Following his arrest, TNT suspended the basketball Hall of Famer from his hosting gig on Inside the NBA for nearly two months.

Upon his return Thursday, he publicly apologized for his behavior. "Clearly everybody knows I got a DUI," Barkley said at the show's opening. "That's unacceptable, that is 100 percent my fault. I let my family down, clearly, I let TNT down, clearly. But also I let the NBA family down. All I can say is, that will never happen again, and I'm sorry. I screwed up, I made a mistake, I'm sorry and I apologize."

Barkley also warned viewers to avoid making the same mistake. "I want everybody to seriously think about it because clearly you can kill somebody else, or you can kill yourself. I hope that somebody else out there thinks about that before they get behind the wheel."