Intelligence and law enforcement officials have information that the teams could at any time launch a "Mumbai style" terror attack that targets civilians for death or hostage taking. The 2008 Mumbai attack used small arms and explosives to kill 175 people and paralyze the Indian city for days.Background:
The current concerns are for scenarios that include opening fire at airports in Europe as well as executing similar attacks at "soft" targets like tourist attractions or hotels.
According to ABC News sources, the terror plotters have moved through the surveillance stage, checked back in with al Qaeda in Pakistan, and have received the go-ahead to strike.
US: Europe can be attacked Mumbai style.
Credible threat to Europe.
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