LOS ANGELES - Police records showed that R&B singer Chris Brown was being held on $50,000 bail after an alleged battery incident. The L.A. Times is reporting that the woman in the incident is Brown's girlfriend, pop singer Rihanna.

The Minneapolis Star Tribune reported that Rihanna was "reportedly hospitalized with bruises on her face."

Los Angeles police officer Karen Smith says Brown walked into a station around 7 p.m. and was being interviewed by detectives.

Police booked the 19-year-old R&B singer and dancer on suspicion of making a criminal threat, a felony. Police did not explain how their initial report of an injury assault related to the charge, but it will ultimately be up to the district attorneys office to decide what charges, if any, should be brought against Brown.

Police say the 19-year-old singer and a woman were in a vehicle in the Hanc**k Park neighborhood early Sunday when they began arguing, and the argument escalated when they got out of the car.

Police say the woman identified Brown as her attacker, but he was gone by the time officers arrived.

Both Brown and Rihanna were no-shows for Sunday nights Grammy Awards. Both were nominated and scheduled to perform.