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paris suicide bombings
Abdelhamid Abaaoud is believed to have links to earlier terror attacks that were thwarted.
Omar Ismaïl Mostefai was one of three men who detonated suicide belts.
"It's the only way I can think of to respond."
TATP, or triacetone triperoxide, is an improvised explosive that also was used in the 2005 London bombings that killed 52 commuters.
While attempting to back away from security, the attacker detonated the vest.