On September 26, 2006, the Deutsche Oper Berlin announced the cancellation of four performances of Mozart's opera Idomeneo, re di Creta. The performance had been planned for November 2006, citing concerns that the production's depictions of a severed head of the Islamic prophet Muhammad raised an "incalculable security risk." "To avoid endangering its audience and employees, the management has decided against repeating Idomeneo in November 2006," the opera house said in a press release.