The National Security Agency, Americas electronic eavesdropping centre, can scan telephone traffic searching for matching voice prints. Binalshibhs voice was broadcast for the first time earlier this month on Al-Jazeera TV, the Qatari television station, when he and another Al-Qaeda ringleader, Khalid Sheikh Mohammed, bragged about being the masterminds behind September 11. The $25m reward offered by the American government for Binalshibhs capture may also have contributed to his arrest.
WOW...read that slowly :) and then read it again....
Yeah... lesseee... This time I'm reading, "Damn... Allah didn't tell me to use a voice scrambler!"