Terrorist attack thwarted in Moscow region, FSB arrest suspect & seize ISIS flag (VIDEO)

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Police at the scene of Friday's attack.
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In his hiding spot, authorities seized IED parts and explosive-crafting manuals, and found a history of messages with known terrorists along with a video of him swearing allegiance to them. 

Footage from the special operation also shows multiple cellphones, a revolver and the flag of the Islamic State (IS, formerly ISIS) terrorist group.

The agency withheld the specifics of where exactly the attack was going to take place as the investigation is still ongoing.

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