Chris Brown pleaded guilty to misdemeanor assault on Tuesday.
The 25-year-old singer admitted to punching fan Parker Adams outside a Washington D.C. hotel in October 2013. Brown was sentenced to time served, and was released after the proceedings.
"I would like to say to the court, I'm sorry," he told the judge.
The Adams assault took place while Brown was on probation for his 2009 assault of Rihanna. He served two days in a D.C. jail following his arrest, and served additional time in California for violating his probation. The singer's attorney, Danny Onorato, declared his client has already been "punished severely," and said he "learned" from his actions.
Brown is on probation for the Rihanna assault until 2015, and has 500 hours of community service left to complete in his California sentence.