Teen pop star Justin Bieber and his team were flabbergasted Tuesday by the allegations of a 20-year-old California woman who accused him of impregnating her and fathering her child.

The legal team of the singer stated that the claims are malicious, defamatory, and demonstrably false.

Star magazine reported that a woman named Mariah Yeater asserted that she and the 17-year-old singer had sex backstage at a Los Angeles show; three months ago, she gave birth to a baby boy, and has filed a paternity lawsuit against Bieber demanding child support.

While we haven't yet seen the lawsuit, it's sad that someone would fabricate malicious, defamatory, and demonstrably false claims. We will vigorously pursue all available legal remedies to defend and protect Justin against these allegations, Bieber's representative told TMZ.

They said they will take all possible measures to defend their client from such false accusations.