Before the meeting, the United States intercepted a telephone call to Yemen by al-Mihdhar concerning arrangements for the trip. Osama bin Laden had called that number dozens of times. By request of the CIA, the Malaysian authorities videotaped the meeting, but no sound recordings were made. The men were also photographed when they came out of the meeting. American investigators did not identify these men until much later. That bin al-Shibh attended the meeting was discovered by the investigators by looking into his credit card records. Sufaat was later arrested, but he denied that he knew any of the men and said that Hambali had arranged the meeting.