UPDATE: Justin Bieber Facing New Racism Row: New Video Sees Singer Joking About Killing Black People and Joining KKK [VIDEO]

Justin Bieber is facing another allegation of racism. Just a few days after an old video of him using racial slurs at age 15, the Canadian heartthrob is facing yet another racism scandal with the emergence of another video of killing joking about killing black people.

On Sunday, the controversial footage was leaked online by UK tabloid The Sun. In the video shot in 2011, the pop star, who was just 15 years old at that time, was filming his “Never Say Never” documentary backstage at a promotional event when he started a racist joke.

“Why are black people afraid of chain saws?” Bieber asked before answering his own question, “Run n*****, n*****, n*****.”

He has since apologised for his tasteless joke, saying he was just a kid back then and he didn’t understand that words could hurt.

“I thought it was okay to repeat hurtful words and jokes, but didn’t realise at the time that it wasn’t funny and that in fact my actions were continuing the ignorance,” he said in a statement to the Associated Press.

However, The Sun has reported that a new clip of the singer cracking another racist joke has surfaced.

He was reportedly caught on camera changing the lyrics of his song “One Less Lonely Girl” to “one less lonely n*****,” adding a joke about joining the infamous white supremacist group Ku Klux Klan.

“Unfortunately this is the devastating reality of how Justin has behaved and reveals his attitude toward such a deeply emotive subject,” a source told the paper. “People need to see this. Normal kids in society do not make these kind of jokes. He is protected by a network of staff, but the camera doesn’t lie.”

Bieber, now 20, apparently knew of the existence of the tape before it reached the public.

As TMZ reported, a guy who was in possession of the video reached out to his team approximately two months ago, asking for U$1 million in exchange for the video.

Bieber’s team refused, thinking that the tape wouldn’t be harmful to him because he was just 15 when he told the racist joke.

UPDATE: TMZ has released the said video, which was apparently shot when he was just 14.