A plane at New York City's JFK Airport was evacuated Sunday following a bomb threat, according to the the Port Authority Police Department. 

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Authorities told Fox News the threat was received from an incoming flight from Moscow, Russia, which landed at the New York airport at about 3:49 p.m. EST with approximately 250 passengers.

JFK Airport said in a tweet that it is "fully open and flights are operating without delays" and that emergency personnel and activity may be observed.

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Police added that an investigation into the incident is ongoing.