It happened around 10:20 a.m. at a security checkpoint in Terminal C.
Port Authority police detained the woman. She was later transferred to University Hospital for an evaluation.
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An unknown number of passengers self-evacuated to the ramp area during the security event.
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They've been allowed to return to the terminal, but they had to be re-screened.
"While there was no bomb threat nor shooting that occurred, the disturbance caused significant public alarm to ticketed passengers who consequently ran from the disturbance and exited the terminal through various means," the Port Authority said in a statement.
No flights were disrupted.
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Operations we back to normal by noon.
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