Justin Bieber and DJ/producer Skrillex have been accused of copyright infringement over the pop superstar's hit single SORRY.

Singer Casey Dienel, known professionally as White Hinterland, claims the Baby hitmaker's chart smash sounds eerily similar to her track Ring The Bell, which became an indie hit in 2014.

In legal papers filed against the 22-year-old, his song co-writers, and producer Skrillex, Dienel alleges they lifted an eight-second snippet of her vocals, and then looped it to feature throughout Sorry, according to sources.

She also claims the tune features synthesizers, samples, synth bass, drums, and percussion, which all closely resemble the sounds featured on Ring The Bell.

Dienel contacted Bieber's representatives in December (15) and threatened legal action if the star didn't remove the sample, but her demands were reportedly ignored and now she is seeking compensation.

Bieber's publicists have yet to respond to the accusations.