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Japanese pop star's teary apology after breaking band rules

1 February 2013 Last updated at 17:12 GMT

A Japanese pop star has shaved her head and offered a filmed apology after breaking her management firm's rules by spending a night with her boyfriend.

A sobbing Minami Minegishi apologised to her fans and said she did not want to leave the band AKB48, in the video seen by millions on YouTube.

Tim Wilcox reports.

Courtesy AKB48/King Records