The security alert is at Belfast International Airport There is a security alert at Belfast International Airport.
Police and army bomb experts are examining a suspicious vehicle which was discovered in the airport’s long-stay car park at about 1430 BST on Saturday.
Flights are not affected at this stage, however travellers are advised to check with their airlines for more information.
It is believed the alert is not linked to bombs left on US-bound cargo planes.
Home Secretary Theresa May confirmed on Saturday that a device found in a package sent from Yemen and found on a US-bound cargo plane could have exploded on board the jet.
The device, intercepted at East Midlands Airport on Friday, was viable and could have exploded on board, she said.
Dubai police earlier confirmed that a second device, also on a US-bound cargo plane, contained explosives.
Washington suspects the devices were part of an al-Qaeda plot.
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