Updated

Attorney General Eric Holder says he is confident the Justice Department can successfully prosecute a Guantanamo Bay detainee in civilian court despite a setback the judge in the case has dealt to prosecutors.

A federal judge blocked the government from calling its star witness against Ahmed Khalfan Ghailani (guy-LAH-nee) because investigators only learned about the witness after Ghailani underwent harsh interrogation at a CIA-run camp.

At a news conference, Holder said the government intends to proceed with the trial and is reviewing the judge's ruling.

The attorney general says there have been over 300 successful prosecutions in civilian courts in terrorism cases.