Rapper Nelly was arrested after a woman accused him of raping her on the tour bus after a concert in the vicinity of Seattle.
Police in Auburn said they arrested the artist, after a woman called the rescue service to 03:48 (10:48 GMT) reports of a sex attack.
The singer strongly denies the allegations and has now been published.
“I have not been charged… so no Deposit was required,” he tweeted.
“I was released, pending further investigation.”
The singer tweeted that he was “more than shocked that I targeted with this false statement”.
“I am completely innocent,” he said. “I am confident that once the facts are considered, it is very clear that I was the victim of a false accusation.”
Nelly, whose real name is Cornell Iral Haynes, Jr., was taken into custody, said a second-degree rape for free, TMZ.
In a statement, his lawyer described the allegation as “completely manufactured”.
“Our first investigation, it is clear that this claim is devoid of credibility, and is motivated by greed and vindictiveness,” Scott Rosenblum said in a statement.
Nelly is best known for his US number-one hits “Hot in herre” and “Dilemma”. He was most recently a studio released album in the year 2013.
In 2015, he was arrested on felony charges after police found drugs and weapons on Board his tour bus.
The 42-year-old is currently on tour with the Backstreet Boys, and Florida Georgia Line, and entered the night in Auburn on Friday.
The bus was parked near a local Walmart, at the time of the alleged incident. A police statement said they were continuing to investigate.
Nelly was due to run on the Smooth stadium Tour in Ridgefield near Portland on Saturday evening.