Justin Bieber slams ‘malicious’ paternity claim

Justin Bieber. AP FILE PHOTO

LOS ANGELES—Teen pop sensation Justin Bieber vowed “vigorous” legal action Wednesday after a 20-year-old reportedly claimed he fathered her baby, saying the assertion is “malicious” and demonstrably false.

According to the tabloid Star magazine, Mariah Yeater says she and 17-year-old Bieber had sex backstage at one of his shows in Los Angeles, and that she gave birth to a baby boy three months ago.

The magazine, which splashed a picture of mother and baby on its front cover, said Yeater’s lawyers had filed a lawsuit on Monday.

“While we haven’t yet seen the lawsuit, it’s sad that someone would fabricate, malicious, defamatory and demonstrably false claims,” said a statement by Bieber’s publicist.

“We will vigorously pursue all available legal remedies to defend and protect Justin against these allegations,” it added.

On Twitter, Beiber said: “so Im going to ignore the rumors…and focus on what is real. an opportunity to help by doing what i love. Judge me on the music! Love yall!”

He put out a flurry of tweets about his just-released charity Christmas recording “Under the Mistletoe” — “So Let’s Get this Album to #1 and all make a change for the better” — but did not confirm or deny the paternity talk.

The Canadian-born heartthrob soared to stardom after videos of his performances were posted on YouTube, with his album “My World 2.0” hitting the top of the US charts in 2010.

His music video “Baby” is one of the most-watched clips ever posted on YouTube, with more than 640 million viewers.