Author Salman Rushdie was attacked and apparently stabbed Friday by a man who rushed onstage as Rushdie was about to deliver a lecture in Western New York. Rushdie has repeatedly received death threats from Iran since 1980s for his writing.

Rushdie was taken by helicopter to a hospital, police said, adding that his condition is not known yet. Spectators were ushered out of the outdoor amphitheater.

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Rushdie’s novel, Satanic Verses, was banned in Iran, where the late leader Ayatollah Ruhollah Khomeini issued a 1989 fatwa, or edict, calling for Rushdie’s death.