American fighter jets have escorted a passenger plane into New York amid a huge security alert on both sides of the Atlantic.
The development comes after two suspicious packages from Yemen were found on US-bound planes.
The Emirates flight from Dubai - flight number 201 - landed at John F Kennedy Airport at 8.40pm UK time.
FBI spokesman Richard Kolko said the Boeing 777 was escorted because it was carrying cargo from Yemen.
Sky sources said security officials are checking to see whether any other planes carrying packages from Yemen are still in the air.
The first package was discovered on a United Parcel Service jet, which had stopped to refuel at East Midlands Airport in the UK while flying from Yemen to Chicago.
It was a converted ink toner cartridge, containing white powder, and had wires sticking out from the top.