Law enforcement released a statement saying that Chris and the man got into an argument around 4:30 AM outside the W Hotel in Washington D.C. According to TMZ sources, Brown punched the guy in the face, but the man never hit him back.
Chris was taken into custody, along with his bodyguard. Authorities say the man "sustained non-life threatening injuries and was transported to a local hospital where he was treated and released."
If the rapper is found in violation of his probation in the Rihanna case, he could face up to four years in prison.