A rape case against rapper Nelly has been dropped by prosecutors in Washington State.

The decision comes after Nelly's accuser refused to cooperate with the investigation claiming she wouldn't stand a chance taking on a celebrity in court.

The woman had called police in October following the alleged assault that she claimed took place on Nelly's tour bus.

But without her testimony, TMZ reported Wednesday, the King County Prosecuting Attorney's Office determined it was unable to charge the recording artist with a crime.

Closed: A rape case against Nelly has been dropped after prosecutors in Washington State determined that without the victim's cooperation, they couldn't charge him with a crime

On October 13, a lawyer for the alleged rape victim announced that we 'do not live in a society where a 21-year-old college student can feel safe enough to pursue criminal charges against a celebrity for an alleged rape.'

Attorney Karen Koehler stated that the young woman 'wishes she had not called 911 because she believes the system is going to fail her.'

She added her client would refuse to testify in court.

Trouble: The rapper was arrested October 7 by Auburn police after a young woman accused him of assaulting her on his tour bus. She later stated she would not testify against him in court

Innocent: Upon his release without charge, Nelly posted a statement on Twitter branding the allegations false and apologizing for 'putting himself in the situation'

Auburn police arrested Nelly, whose real name is Cornell Iral Haynes Jr, early on the morning of Saturday October 7 on his tour bus at a Walmart.

He was booked into jail on suspicion of second-degree rape and released later that day. He was never charged with a crime.

Nelly's attorney, Scott Rosenblum, called the rape claim a 'completely fabricated allegation.'

TMZ reported that Rosenblum demanded a public apology from the accuser, telling the website t her 'reckless accusation, once investigated thoroughly, was exposed for what it was-a fabrication. A fabrication that has caused Nelly and his family to suffer emotionally and financially.'