"While we have reviewed the existing investigative material, without the assistance of the complainant, this office is unable to proceed or fully assess the merits of the case," the prosecutor's office said.

ST. LOUIS – A rape case against St. Louis rapper Nelly has been dropped after prosecutors say the accuser refuses to cooperate.

"While we have reviewed the existing investigative material, without the assistance of the complainant, this office is unable to proceed or fully assess the merits of the case," the prosecutor's office said in a statement to 5 On Your Side’s sister station, KING 5, on Thursday.