Justin Bieber accused of fathering baby

Paternity suit filed against singer by 20-year-old fan

Published On: Nov 02 2011 10:29:34 AM EDT   Updated On: Nov 03 2011 05:44:45 AM EDT

Justin Bieber is vigorously denying claims made by a 20-year-old California woman who says in a lawsuit that the 17-year-old singer is the father of her newborn baby.

"While we haven't yet seen the lawsuit, it's sad that someone would fabricate malicious, defamatory and demonstrably false claims," Bieber's publicist said in a statement released to MTV on Tuesday. "We will vigorously pursue all available legal remedies to defend and protect Justin against these allegations."

In the paternity lawsuit, Mariah Yeater claims she had unprotected sex with the Canadian teen idol a year ago in a backstage area after he propositioned her at one of his concerts and that her 3-month-old baby is his.

An affidavit requests that the court compel Bieber to undergo a paternity test to prove whether the child, named Tristan, is his and then to provide "reasonable child support, effective immediately," according to Star magazine.

Bieber confirmed in March that he is dating Disney star Selena Gomez.