Justin Bieber Justin Bieber

Is Justin Bieber going to a be a father?

Mariah Yeater has slapped the 17-year-old pop star with a lawsuit, claiming that Bieber is the father of her child, Star reports. Yeater, 20, claims she and Bieber had sex backstage at the his show in Los Angeles. Three months ago, she gave birth to a baby boy she claims is Bieber's. Yeater has now filed a paternity lawsuit against the singer and is seeking financial support.

Photo Gallery: Justin Bieber through the years

A rep for Bieber responded to the claims with the following statement to TVGuide.com: "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."The Biebs himself took to Twitter to seemingly address the reports. "All the rumors...the gossip....Im gonna focus on the positives....the music," he tweeted.