GUANTANAMO BAY NAVAL BASE, Cub — The officer in charge of the operations of the Guantanamo Bay prison says hidden listening devices have been removed from rooms used by defense lawyers to meet with prisoners.

Army Col. John Bogdan says the microphones disguised to look like smoke detectors were not used to monitor private conversations between lawyers and their clients. But Bogdan says he had the devices pulled out of the rooms to remove any doubts.

He testified Thursday during a pretrial hearing for the prisoner charged with war crimes for allegedly orchestrating the deadly bombing of the USS Cole in 2000.

Lawyers for the accused bomber and for the prisoners charged in the Sept. 11 attacks in late January and expressed alarm over the possibility of eavesdropping on their private meetings.