More than half of people arriving in Ireland aren't answering calls to check they're self-isolating.
The Irish Independent reports that between the end of May and middle of June, calls were made to 684 recent arrivals.
But new figures show just 308 of the calls were answered.
Anyone travelling into Ireland has to fill out a form telling officials where they plan to self-isolate for two weeks, but the quarantine itself isn't mandatory.
Stock image: Shutterstock