Singer Justin Bieber has found himself facing a legal battle over alleged copyright infringement.

The news comes after indie artist Casey Dienel, who performs under the name White Hinterland, accused the Canadian pop star of using a riff in his smash hit “Sorry” which she believes to be “virtually identical” to aspects of her own song, “Ring the Bell”.

Ms Dienel brought legal action against Justin Bieber, alongside “Sorry” co-collaborators Skrillex and Vivendi’s Universal Music Group after receiving no response to initial contact alleging infringement. Both Justin Bieber and Skrillex have taken to social media to deny the allegations, the latter providing footage of how the riff was supposedly developed independently of Ms Dienel’s song.

Ms Dienel claims that Bieber’s “Sorry” unlawfully samples “specific and unique characteristics of the female vocal riff” from her lesser-known track “several times” – citing an article in The New York Times which noted “the distinctiveness” of Sorry’s riff in her claim.

The White Hinterland singer, who believes that the disputed riff is her own intellectual property, has also said that several attempts to resolve her disagreement with Bieber outside of Courts have been “ignored” leaving her no choice than to bring proceedings.

Ms Dienel filed the lawsuit in the U.S. District Court in Nashville, Tennessee.