VIDEO : Indie Pop Singer Sues Justin Bieber Saying He Stole Her Vocal Riff

Justin Bieber performs at the Staples Centre. (AP) New York - An indie pop singer has filed a copyright violation lawsuit against Justin Bieber, saying the superstar stole the distinctive vocal riff in his hit Sorry from her. Casey Dienel - who performs under the stage name White Hinterland and has won acclaim in indie music circles - said she was entitled to "substantial" profits from Bieber's song, saying the amount should be determined at a jury trial. Skrillex and Diplo, another prominent producer, helped Bieber craft a new tropical house sound for Purpose, the third top-selling album in the United States last year.