Rihanna Pictures: Rihanna arrives on the red carpet at the 54th Annual Grammy Awards held at the Staples Center on February 12, 2012 in Los Angeles, California.
LOS ANGELES — R&B star Rihanna is cooperating with investigators as they look to build a domestic violence case against her boyfriend, singer Chris Brown, a police source tells the Los Angeles Times.
Brown was arrested Sunday evening on suspicion of making criminal threats against Rihanna, whose real name is Robyn Rihanna Fenty.
The couple had attended Clive Davis' annual pre-Grammy party on Saturday night before reportedly getting into an argument on the car ride home. They were sitting in Brown's rented Lamborghini in the city's Hancock Park neighborhood shortly after midnight when the alleged assault reportedly took place.
Brown is said to have "fled on foot" with the car keys in hand, leaving Rihanna behind to dial 911 for help, a source told E! News.
"Rihanna didn't want anyone to touch her, she was in so much pain," said the source.
A police source told the Los Angeles Times that Rihanna's injuries included "bruises and a scratch on her face."
She was later treated at Cedars-Sinai Medical Center, according to published reports.
Brown, who is currently free on $50,000 bail, could see his career head into a tailspin if the case proceeds forward against him. On Monday, Wrigley temporarily suspended his Doublemint commercials.
"Wrigley is concerned by the serious allegations made against Chris Brown. We believe Mr. Brown should be afforded the same due process as any citizen. However, we have made the decision to suspend the current advertising featuring Brown and any related marketing communications until the matter is resolved," the company said in a statement.
