Justin Bieber is facing another lawsuit – this time for allegedly plagiarising his hit song “Sorry.”

Massachusetts songwriter Casey Dienel, known as White Hinterland as a performer, has filed a copyright infringement lawsuit against the Canadian singer and Skrillex. She claimed that the two used her vocal loop without permission, Billboard reported.

Dienel said the “unique characteristics of the female vocal riff” from her song “Ring the Bell” is the same as that on Bieber’s hit track. About eight seconds of “Ring the Bell” refrain is allegedly used six times in Justin Bieber’s song. Dienel added that “the vocal riff is a qualitatively and quantitatively distinct and integral element of ‘Ring the Bell. It provides the introduction and primary musical motive for the structure of the song,” much like in “Sorry.”

MTV has observed that Dienel’s “Ring the Bell” begins with a loop that seems similar to the phrase that can be heard throughout “Sorry.” However, MTV also noted that it does not sound like Bieber’s single copied “Ring the Bell” directly.

Check out Dienel’s “Ring the Bell” song and Bieber’s “Sorry” below

Dienel added she warned Justin Bieber’s camp last December to stop using the similar part in his song, but the “Purpose” hitmaker ignored her.  The songwriter said she spent more than four years working on “Ring the Bell.”

Meanwhile, Dienel also sued Skrillex, who wrote and produced “Sorry,” along with Blood (a.k.a. Michael Tucker).  Other writers who were also included in the lawsuit are Julia Michaels and Justin Tranter, Billboard reported.

In an interview with The Fader in 2015, Blood spoke about writing the loop in question. “From the perspective of the producer, I find the muffled vocal chops to represent the people or situations in which Justin or the listener could be apologetic towards. The vocal manipulations make an ambiguous sound and a moment later Justin replies, ’Sorry.’ I love that narrative,” said Blood.

“Ring the Bell” has been streamed on Spotify for over 500,000 times. According to Billboard, this has been the most streamed song on Hinterland’s 2014 album “Baby.”