RnB star Chris Brown was arrested after allegedly punching girlfriend Rihanna in the face at a pre-Grammy party.

Sources said Rihanna was distressed, had a cut lip, bloody nose, bite marks and bruises. She was interviewed by police at the hospital before being released a few hours later.

Chewing gum makers Wrigley have suspended an advert starring Brown. The young star, who rose to fame as a sweet-faced 16-year-old, has a clean-cut image and any conviction could cost his career. They say:

"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," the company said in a statement. "However, we have made the decision to suspend the current advertising featuring Brown and any related marketing communications until the matter is resolved."

Meanwhile, Rihanna cancelled a concert in the Malaysian capital, Kuala Lumpur, planned for this Friday. Her publicist has refused to comment on the alleged incident except to issue a brief statement which said: "Rihanna is well. Thank you for concern and support."