Production has been halted on 24 while Kiefer Sutherland undergoes surgery to treat a ruptured cyst near his kidneys.
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Says the network in a statement, "We are temporarily suspending production of 24 while our friend and colleague Kiefer Sutherland undergoes a medical procedure. We hope to resume production shortly and do not anticipate any disruption in the broadcast of this season's episodes."
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A rep for Sutherland says, "While Kiefer Sutherland is frustrated to miss even one day of work, he and FOX decided together that it would be best to complete this minor elective procedure now as a precaution as opposed to six weeks from now when production wraps. He looks forward to returning to work (this) week."