Published Thursday, 03 July 2014
Airline passengers could face some disruption due to increased security. (© Getty)
Belfast International and Dublin Airport are among the facilities in the UK and Ireland that could be affected by the directive from the US Department of Homeland Security.
"We do not comment on safety and security arrangements for our passengers," a statement from Belfast international said.
"Their safety is of paramount importance. We fully comply with all current airport security regulations."
Dublin Airport made a similar statement, adding: "Dublin Airport continues to operate as normal and intending passengers travelling to the US should continue to arrive as normal."
US Homeland Security Secretary Jeh Johnson confirmed that he had ordered enhanced security measures in response to ongoing assessment of the "global threat environment".
While efforts will be made to avoid unnecessary disruption, passengers are likely to be affected.
According to reports, the security measures are in response to concerns that groups in Yemen and Syria are working together on a bomb plot targeting the US.
Prime Minister David Cameron's official spokesman said: "There are terror organisations around the world that seek to do the UK, its citizens, and citizens of many other countries - including our Western allies - harm.
"We need to always be vigilant to situations that can develop."
Deputy Prime Minister Nick Clegg has also warned the public that the increased security measures are unlikely to be "a one-off, temporary thing".
He told LBC: "This is the world we now live in. I don't want people to think that this is some sort of blip for a week.
"This is part of an evolving and constant review about whether the checks in our airports - and indeed other places of entry and exits from countries - keep up with what we know from intelligence and other sources about the nature of the threats we face."
The nature of the security measures has not been disclosed, but it is understood that passengers are now being asked to remove all electrical and battery-operated items from their bags during checks.
© UTV News