Mariah Yeater from California is said to have filed a lawsuit against Justin Bieber alleging he is the father of her three-month-old baby, Radaronline.com reported.

According to reports, Mariah Yeater, 20, is asking Justin Bieber to take a paternity test.

Justin Bieber, 17, is currently dating pop sweetheart Selena Gomez, 19.

Radaronline.com reports that Star magazine have obtained the court papers, which are said to have be filed late October, making the request.

The website also reported that Mariah Yeater asks for Justin Bieber “to provide adequate support for my baby”.

Mariah Yeater claims she had sex with Justin Bieber on October 25, 2010, when she was aged 19-years-old and he was aged 16-years-old out the time.

That would mean under California law that Justin Bieber was underage and if the claims turn out to be true Mariah Yeater would be guilty of statutory rape of a minor.

According to Radaronline.com a hand-signed affidavit has been reviewed and claiming that Mariah Yeater was invited backstage by bodyguards after Justin Bieber’s performance at the Los Angeles Staples centre.

The report said that after describing meeting Justin Bieber, Mariah Yeater wrote in the affidavit: “Immediately, it was obvious that we were mutually attracted to one another, and we began to kiss. Shortly thereafter, Justin Bieber suggested that I go with him to a private place where we could be alone.

“I agreed to go with him and on the walk to a private area, he told me he wanted to make love to me and this was going to be his first time.

“We went inside and immediately his personality changed drastically. He began touching me and repeatedly said he wanted to f*** the s*** out of me. At the time I asked him to put a condom for protection, but he insisted that he did not want to.

“In his own words, he said that because it was his first time he wanted to feel everything.”

Mariah Yeater is said to have described the intercourse as “brief”.

A court hearing is said to have been set for December 15.

According to TMZ, a spokesperson for Justin Bieber said: “While we haven’t yet seen the lawsuit, it’s sad that someone would fabricate malicious, defamatory, and demonstrably false claims.”

Justin Bieber has been dating Selena Gomez since the end of 2010 but the couple waited until the Oscars in March to make their first public debut together.

Last month when Justin Bieber and Selena Gomez were both in Winnipeg and they spent an amorous evening watching the basketball together and were seen smooching from a private box.

While Selena Gomez has been looking after Baylor, the dog is said to be both Selena and Justin’s and the couple are thought to have adopted the pup from an animal rescue centre in Winnipeg on October 14.

In February this year Justin Bieber, who is a Christian, spoke out about pre-marital sex in an interview with Rolling Stone magazine and said: “I don’t think you should have sex with anyone unless you love them.”