Jay-Z, the star rapper and entrepreneur whose real name is Shawn Carter, was accused in a lawsuit Sunday of raping a 13-year-old girl in 2000 allegedly along with Sean "Diddy" Combs. 

The anonymous accuser, identified only as "Jane Doe," said the assault happened after she was driven to an MTV Video Music Awards after-party.

The federal lawsuit was originally filed in October in the Southern District of New York, listing Combs as a defendant. It was refiled Sunday to include Carter.  

Texas-based attorney Tony Buzbee, who filed the suit, did not comment. 

Carter called the allegations "idiotic" in a lengthy statement Sunday evening and alleged that Buzbee was engaged in unprofessional behavior.

"These allegations are so heinous in nature that I implore you to file a criminal complaint, not a civil one!! Whomever would commit such a crime against a minor should be locked away, would you not agree?" Carter said in a statement to NBC News. "These alleged victims would deserve real justice if that were the case."

A spokesman for the U.S. Attorney's Office for the Southern District of New York declined to comment on whether the office is pursuing the case when shown NBC News' report on the lawsuit.

Buzbee has filed several lawsuits in recent months — all have withheld their complainants' names — accusing Combs of assault and rape. This is the first suit in which he has named another high-profile defendant.  

In a statement, legal representatives for Combs called the suits "shameless publicity stunts, designed to extract payments from celebrities who fear having lies spread about them, just as lies have been spread about Mr. Combs."

"As his legal team has said before, Mr. Combs has full confidence in the facts and the integrity of the judicial process. In court, the truth will prevail: that Mr. Combs never sexually assaulted or trafficked anyone—man or woman, adult or minor," the statement read.

Federal prosecutors in New York criminally charged Combs in September with racketeering, sex trafficking and other offenses, and he is behind bars at Brooklyn's Metropolitan Detention Center after he was denied bail for a third time last month. His trial is scheduled for May 5. 

Prosecutors said in a court hearing last month that they are in the process of potentially bringing more charges against Combs in a superseding indictment. 

Before the lawsuit was refiled Sunday, "Carter received a letter from Plaintiff's counsel requesting a mediation to resolve this matter," Buzbee wrote in the suit. In response to the letter, which NBC News has seen, Carter filed his own lawsuit against the accuser's attorneys, Buzbee wrote in the suit.

"You have made a terrible error in judgement thinking that all 'celebrities' are the same," Carter added in his statement Sunday. "I'm not from your world. I'm a young man who made it out of the project of Brooklyn. We don't play these types of games. We have very strict codes and honor. We protect children."

The lawsuit claims that in 2000, when Doe was 13, Combs and Carter raped her at a house party after the MTV Video Music Awards in New York.  

Jay-Z at the MTV Video Music Awards at Radio City Music Hall in New York on Sept. 7, 2000.Jeff Kravitz / FilmMagic via Getty Images

The lawsuit says a friend dropped her off at the VMAs at Radio City Music Hall. She did not have a ticket, and she approached various limousine drivers to try to gain access to the show or an after-party.

One driver, the lawsuit says, told her that he worked for Combs and that she "fit what Diddy was looking for." He invited her to a party after the show and told her to return to his car later in the evening after he transported Carter and Combs, the suit says.  

Later, the driver picked her up, the suit says, and after 20 minutes they arrived at a white house with a U-shaped driveway, the suit says. She had to sign a document she believed was a nondisclosure agreement on arrival — and did not receive a copy — to enter the party, which the suit says was filled with celebrities and people doing marijuana and cocaine.  

She was offered a drink that made her feel "woozy, lightheaded and felt [like] she needed to lie down," the suit says, and she went into a room to rest.  

Shortly afterward, the suit says, Combs and Carter entered the room with Combs saying, "You are ready to party!" 

That's when, she alleges, Carter removed her clothes, held her down and raped her while Combs and an unnamed female celebrity watched. She says Combs also raped her as Carter and the woman looked on.  

The suit says that she was able to resist being forced to perform oral sex on Combs by hitting him in the neck and that he "stopped."  

After the alleged assault, the suit says, she "grabbed her clothes" and left. She made her way to a gas station, where she called her father, it says.      

The accuser is seeking unspecified damages. The lawsuit is filed under New York's Victims of Gender-Motivated Violence Protection Act.

"My only heartbreak is for my family," Carter said in the statement. "My wife and I will have to sit our children down, one of whom is at the age where her friends will surely see the press and ask questions about the nature of these claims, and explain the cruelty and greed of people. I mourn yet another loss of innocence.

"Only your network of conspiracy theorists, fake physics, will believe the idiotic claims you have levied against me that, if not for the seriousness surrounding harm to kids, would be laughable," Carter added.