At least three people have refused to fill out passenger location forms at Dublin Airport, it has emerged.
Gardai are investigating the incidents after Department of Justice figures show less than 50% of travellers who received follow-up calls from Dublin Airport have responded to the airport's Border Management Unit since July.
All passengers travelling through the airport are required to fill out the locator forms, Dublin Live reports.
A spokesperson for the Department of Justice commented on the investigation saying it has been referred to the GNIB.
The statement said: "Since the introduction of the mandatory requirement to complete the passenger form three people at Dublin Airport have refused to fill out the form and they have been referred to the Garda National Immigration Bureau."
American tourists being allowed to jet into Ireland from some of the worst hit US states by COVID has been branded a disgrace.
Trinity College biochemistry Professor Luke O'Neill said that the situation as it stands is both "chaotic" and "outrageous", adding that it's "a sure-fire way to increase the chances of spikes".
His warning comes after several US tourists jetted into Dublin Airport, including one man from Texas who described people's concerns as "overblown" when he arrived here at the weekend.
More than 225,000 people have been diagnosed in California, Florida, Texas, Arizona, and Georgia in just the past week alone.
Despite the alarming spike, a number of airlines have resumed flights between the US and Ireland - with the online arrivals board at Dublin Airport showing at least five due in tomorrow, including one from Dallas in Texas.
Prof O'Neill told today's Pat Kenny Show: "It's outrageous. Here we have one of the most dangerous places in the world for COVID-19, which is to say Texas, for example, Arizona - the numbers are terrifying there, they're breaking records every day.
"And yet people are coming into Ireland from those places. I think it's disgraceful.
"We're trying to avoid a surge of a spike - and yet people are coming in from a country that's got a very high level of virus in the community.
"So it's a big mistake letting those people in sadly, of course the tourist trade wants them, but this is a sure-fire way to increase the chances of spikes and surges coming into Ireland."
