LOS ANGELES, California (CNN) -- Singer Chris Brown, sought by Los Angeles police after an alleged domestic violence incident, turned himself in Sunday, police said.

Chris Brown attends a party saluting music producer Clive Davis in Beverly Hills, California, on Saturday.

Brown, nominated for two Grammy Awards, was a no-show Sunday night at the nationally televised awards show. He was scheduled to perform at the show.  His girlfriend, singer Rihanna, abruptly canceled her planned Grammys performance, but neither her spokesman nor the show organizers gave a reason.

"Rihanna is well," her spokesman said in a written statement. "Thank you for concern and support."

Police have not identified the alleged victim, who they said "suffered visible injuries and identified Brown as her attacker."

Brown, 19, and Rihanna, 20, were seen together Saturday night at a pre-Grammys dinner at the Beverly Hills Hilton, about five miles from where police said the alleged incident happened at 12:30 a.m. Sunday.

The police statement said Brown and a woman were in a vehicle near Hollywood's Hancock Park when "they became involved in an argument."

"After stopping his car, Brown and the woman got out and the argument escalated," police said.

After receiving a 911 call at about 12:30 a.m. Sunday, officers found the woman at the scene of the alleged fight, but Brown had left, the department said.

Investigators were treating the incident as a possible felony battery case, police said.

Executives with Brown's record label at the Grammy Awards told CNN they knew nothing about the incident and declined further comment.

Brown was nominated for two Grammys this year, including in the best male R&B vocal performance category for his song "Take You Down."

He also shares a best pop collaboration with vocals nomination with Jordin Sparks for "No Air."

The introduction to the CBS broadcast of the Grammys, apparently pre-taped, listed both Brown and Rihanna as performers.
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