From CNN:
(CNN) -- Belgian police Thursday arrested a woman they called an "al Qaeda living legend" as part of an operation to thwart a terror attack being planned to coincide with an EU summit in Brussels, a Belgian police source told CNN.
Police seized 14 people, one of whom was planning to carry out a suicide attack in Belgium, the source said. They had contacts at the "highest levels of al Qaeda," the source said.
The police source said officers "had only 24 hours to act."
The leaders of the European Union's 27 member states are meeting in Brussels Thursday and Friday. It is not clear that the heads of state and government themselves were the target of the planned attack.
The federal prosecutor's office in Belgium identified one of the suspects as Malika El-Aroud, the widow of one of the men who assassinated a key opponent of the Taliban in Afghanistan two days before September 11, 2001.
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My Comment: Wiretaps and intercepting communications between this group and others was what made this operation a success. Al Qaeda was clearly plotting to do something big.