""They knew who he was, that he was a singer, but I don't know if there is any relationship between them at this time," a spokesman told the AFP news agency.
Mr Parsa's brother, Najib, told the BBC the attack followed trouble at the concert, when some in the audience called for faster, livelier songs."
http://news.bbc.co.uk/2/hi/south_asia/4530809.stm
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