Low-fares airline Norwegian is insisting that the “door remains open” to a potential Cork-New York route.

The head of one of Europe’s largest low-fares airlines has promised to shake up the Irish transatlantic market after launching 17 ultra- low-fares flights from Ireland to the US — including the first direct transatlantic route from Cork Airport.

The FBI arrested four men in what US authorities called a plot to detonate a bomb outside a Jewish temple and to shoot military planes with guided missiles.