Nelly Arrested for Rape

10/7/2017 8:19 AM PDT

Nelly Arrested for Rape

EXCLUSIVE

Nelly has been arrested for allegedly raping a woman ... TMZ has learned.

Law enforcement sources tell us, a woman claims she was raped on the rapper's tour bus in Washington, where he's been performing.  Nelly is on a tour with Florida Georgia Line and they are set to perform Saturday night in Ridgefield, Washington.  

We're told the alleged rape occurred Saturday morning at around 3:45 AM.  We're told she specifically said Nelly is the one who raped her.

Nelly was booked on second degree rape charges Saturday morning at around 7 AM.  It appears he was  in custody at the time of this post.  

We reached out to Nelly's rep ... so far no word back.