LOS ANGELES - Grammy Award-winning rapper Nelly was arrested Saturday after a woman accused him of raping her in his tour bus, police in the northwestern state of Washington said.

Just before 4 a.m. local time (1100 GMT) a woman called the emergency 911 line "to report that she was sexually assaulted by a male, who is known as the rapper 'Nelly,'" police in Auburn, Washington said.

After police investigated the incident, "at 4:37 a.m. Nelly was taken into custody and booked" at the local jail, the police statement read.

The alleged assault reportedly took place on the tour bus hours after Nelly had performed at the White River Amphitheater just east of Auburn.

A lawyer for nelly vehemently denied the charges.

Nelly - born Cornell Haynes Jr. - "is the victim of a completely fabricated allegation," his attorney Scott Rosenblum told AFP in a statement.

"Our initial investigation clearly establishes this allegation is devoid of credibility and is motivated by greed and vindictiveness.

"I am confident, once this scurrilous accusation is thoroughly investigated, there will be no charges," he added. - AFP