KUALA LUMPUR - POP superstar Rihanna has postponed a concert in Malaysia this week, organisers said on Tuesday, following reports that she accused her longtime boyfriend Chris Brown of assault.

Rihanna's Los Angeles-based representatives informed Malaysia's Pineapple Concerts that the Feb 13 show would have to be rescheduled to an unspecified date 'in light of recent events involving Rihanna', Pineapple Concerts said in a statement to The Associated Press.

Rihanna had been slated to visit Indonesia and Malaysia on her Good Girl Gone Bad tour.

Her planned stop in Kuala Lumpur drew publicity after organisers said she would shun skimpy outfits to conform with Muslim-majority Malaysia's strict rules on performers' dress.

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

A police statement released on Sunday said Brown and an unidentified woman began arguing while riding in a car following a pre-Grammy party where they were spotted together on Saturday night. The fight escalated when they got out of the car, the report said.

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