NEW YORK (AP) - Authorities say they've disrupted a terror plot Saturday that could have caused "unthinkable" devastation.

They say the aim was to set off explosives in a fuel line that

feeds New York's Kennedy airport and runs through residential

neighborhoods.

U.S. Attorney Roslynn Mauskopf calls it "one of the most

chilling plots imaginable."

Authorities say three people have been arrested, including a U.S.

citizen born in Guyana who used to work at JFK. He's expected to

be arraigned Saturday in Brooklyn.

Two other men are in custody in Trinidad, including a former

member of Guyana's parliament. A fourth man is being sought in

Trinidad.

An indictment says all four have been charged with conspiring to

attack the airport by blowing up major fuel supply tanks and the

pipeline.