Nelly has been released following his rape arrest, USA Today has reported.

The rapper was taken into custody on Saturday morning after a woman accused him of raping her on his tour bus in Washington.

The 42-year-old is on tour with Florida Georgia Line there, had been set to perform in Ridgefield on Saturday night, but has since pulled out of the gig.

Arrested: Nelly has been arrested after woman accused him of raping her on tour bus ahead of a Washington concert

Upon his release, Nelly released a statement on Twitter branding the allegations false, and apologizing for 'putting himself in the situation.'

'Let me say that I am beyond shocked that I have been targeted with this false allegation. I am completely innocent. I am confident that once the facts are looked at, it will be very clear that I am the victim of a false allegation,' he wrote.

'I do want to apologize to my loved ones for the embarrassment and for putting myself in a situation where I could be victimized by this false and defaming allegation.

'I also want to thank my fans for their unwavering support. They know me. I assure you I will be vindicated. And I assure you, I will pursue every legal option to address this defaming claim. Thank you.'

Trouble: In April 2015 Nelly was also arrested after a stash of drugs and weapons was found on his tour bus

He then summarized: 'In other words y'all know damm well I ain't do no dumm S^*t like this..!! Love ..!!!!'

He also said he had not been charged with a crime in a follow-up tweet: 'To be absolutely clear. I have not been charged with a crime therefore no bail was required. I was released , pending further investigation.'

Earlier on Saturday, sources told TMZ the alleged attack occurred at 3.45AM, and Nelly - whose real name is Cornell Iral Haynes Jr - was specifically identified by the victim.

He was booked Saturday at seven in the morning on second degree rape charges, and then released, according to TMZ.

Auburn police spokesman Commander Steve Stocker confirmed officers arrested the Grammy-winner early Saturday morning in his tour bus at a Walmart, and that he will have an appearance before a judge 'at some point.'

Nelly's lawyer subsequently claimed he was 'the victim of a completely fabricated allegation.

Innocent: Upon his release, Nelly released a statement on Twitter branding the allegations false, and apologizing for 'putting himself in the situation.'

'I have not been charged with a crime': He continued on Saturday afternoon with a follow-up tweet

'Our initial investigation, clearly establishes the allegation is devoid of credibility and is motivated by greed and vindictiveness,' he said.

'I am confident, once the scurrilous accusation is thoroughly investigated, there will be no charges.

'Nelly is prepared to pursue all all legal avenues to redress any damage caused by this clearly false allegation,' he added.

In April 2015 Nelly was also arrested after a stash of drugs and weapons was found on his tour bus.

The incident unfolded when Tennessee Highway Patrol pulled the bus over because it failed to display a U.S. Department of Transportation and International Fuel Tax Association sticker.

But upon searching the vehicle, officers found methamphetamines, marijuana and handguns.

According to the police report, the trooper had smelled marijuana when they reached Nelly's bus, giving them probable cause to search the vehicle.

Hitmaker: Nelly remains one of the biggest selling rap artists in the US, shifting more than 22million albums

In the sleeper area on the bus they found five rocks that tested positive for meth, as well as a small amount of marijuana and drug paraphernalia.

WRCB TV in Chattanooga reported at the time that police had found 100 small Ziploc bags, often used for the sales of narcotics, in the bus along with three high powered handguns.

A gold plated 50-caliber Desert Eagle pistol, a 45-caliber Tarus pistol and a 500 magnum Smith and Wesson were confiscated from the vehicle.

The St. Louis native was booked on felony possession of drugs, simple possession of marijuana and possession of drug paraphernalia.

Nelly remains one of the biggest selling rap artists in the US, shifting more than 22million albums.

His 2000, 2002 and 2004 albums Country Grammar, Nellyville and Suit all hit number one on the Billboard charts.

He also had four number one singles with Hot In Herre, Shake Ya Tailfeather, Grillz, and his 2002 smash hit featuring Kelly Rowland, Dilemma.