Chris Brown, who had been sought by authorities for violence felony battery, turned himself in Sunday evening and was booked and released on $50,000 bail. However, police say additional charges may be filed against him when the case is presented to the Los Angeles County district attorney’s office. According to the Los Angeles Times, sources say the victim in the alleged physical assault that occurred in the car with pop star Chris Brown Sunday afternoon, was his girlfriend Robyn “Rihanna” Fenty. Brown was riding in a rented Lamborghini with a woman- whose name has not been officially revealed by authorities because of the nature of the case- when all of a sudden an argument ensued, causing Brown to pull over near LA’s Hancock Park. Police say Brown and the woman got out of the car and the argument escalated and became physical. An onlooker called 911, and Brown drove away from the scene before cops arrived. According to Entertainment Weekly, the victim suffered injuries to the face. When Brown went to turn himself into LAPD’s Wilshire police Radio Station , he hid in the backseat of an SUV as paparazzi swarmed to catch a glimpse of the 19-year-old star. Inside the Radio Station , Sgt. Bridget Pickett said of Brown, “He was very professional and didn’t appear to have injuries …He’s a good looking young man.” Sources say that singer Rihanna has been hospitalized, but no word of confirmation from the 20-year-old singer’s camp has confirmed this. “I can’t speak right now” a rep for Brown said when VIBE reached out Sunday night for comment. No official statement from Brown’s camp has been released. In a 2007 Giant interview with writer Laura Checkoway, Brown talked about growing up in an abusive home with his stepfather. “He used to hit my mom,” he told the magazine. “He made me terrified all the time, terrified like I had to pee on myself. I remember one night he made her nose bleed. I was crying and thinking, ‘I’m just gonna go crazy on him one day . . . ‘ I hate him to this day.” Brown was booked on suspicion of making criminal threats. The charge carries a maximum penalty of four years behind bars.