I don't have the time to track it down. To be honest I'm not sure who the leaker was, but it's widely reported there indeed was a leak:
How does he communicate?
His biggest problem remains communications, which the United States has successfully compromised during his time in Afghanistan. For a time, he used satellite phones, but that ended after a leak revealed that the U.S. was listening in.
Those leaks are serious blows because the window closes and you can't see what's going on inside the house anymore," Smith said, citing a 1998 leak revealing that terrorist Usama bin Laden's satellite phone was being monitored by the United States. Afterward, bin Laden ceased using the telephone.