By ANTHONY McCARTNEY
AP Entertainment Writer

LOS ANGELES (AP) ó Chris Brown’s ad campaign with Wrigley was suspended Monday until his criminal case is resolved, and reports surfaced that pop superstar Rihanna, his longtime girlfriend and a fellow no-show at the Grammy Awards, was the woman who accused him of assault.

The Los Angeles Times, citing law enforcement officials familiar with the case and other sources it did not name, reported that Rihanna, whose full name is Robyn Rihanna Fenty, was the woman who told police that Brown had hurt her the night before the Grammy Awards.

A police statement released Sunday afternoon said Brown and an unidentified woman began arguing while riding in a car following a pre-Grammy party where they were spotted together Saturday night. The fight escalated when they got out of the car in the ritzy Hancock Park neighborhood, the report said, and Brown was gone by the time officers arrived.

The report indicated that the woman was injured, but Brown was booked only on suspicion of making a criminal threat, a felony, after walking into a police station Sunday night. Authorities said the district attorney could choose to expand the charges.

Los Angeles Police Chief William Bratton said he expects detectives to present their case to prosecutors in the next day or so. He added Brown received no special considerations before his arrest or when he was booked. “We dealt with him like we deal with everybody else,” Bratton said.

Brown was released after posting $50,000 bail. Both he and Rihanna had backed out of their scheduled performances at the Grammy Awards, where producers scrambled to fill their slots.

Several celebrity Web sites such as TMZ.com, Radaronline.com, Us Weekly and People, citing sources neither named nor characterized, also reported that Rihanna was the woman involved. The Los Angeles Police Department would not confirm the reports, citing state laws that protect the identity of abuse victims.

Rihanna’s publicist declined to say why the singer did not appear, and Brown’s representatives also refused to discuss the allegations or his arrest. Repeated phone and e-mail messages left beginning Sunday night with Brown’s attorney, Mark Geragos, were not returned Monday.

Wrigley said in a statement Monday that it was suspending its ad campaigns featuring Chris Brown as its spokesman for Doublemint gum until the situation was resolved, but stopped short of saying they will drop the troubled R&B star completely.

A company statement expresses concern about “serious allegations made against Chris Brown,” but added that the 19-year-old should be “afforded the same due process as any citizen.”