This is another article about the arrest of the Al Qaeda communications chief, Jazeeri (aka Jaziri, aka Jazairi). It's probable that by "sophisticated monitoring equipment", they mean "Echelon".

] As in previous arrests, FBI technicians helped to locate
] Jazeeri's location through sophisticated telephone
] monitoring equipment, but there was also a bit of
] old-fashioned subterfuge.
]
] Pakistani authorities released the arrested sons of Dr.
] Khwaja only last week. By keeping Khizr Khwaja and Omar
] Khwaja under surveillance and monitoring their phone
] calls, Pakistani security officials and FBI agents
] quickly located Jazeeri in the posh Gulburg neighborhood
] of Lahore.

I also got a kick though out of a section towards the bottom of this article:

Pakistani officials say Jazeeri's arrest could be a significant blow to Al Qaeda's operations, since most Al Qaeda fugitives need outside sources of money to pay for food and shelter in hiding. More important, it is easier to find a soldier than it is to find a good accountant.

Indeed. :)