1,400 hoverboards have been seized at Dublin Port.
The consignment of the Smart Balance Wheels was prevented from entering the Irish market due to safety concerns.
The Competition and Consumer Protection Commission say these were identified through its market surveillance activity.
At the end of October, the Commission says it became aware of reports of unsafe hoverboards across Europe - and initiated an investigation.
In early November, Customs authorities told the Commission about the arrival of the hoverboards.
The Commission's Product Safety Division examined a sample of the products, and identified a number of serious safety concerns.
A box of the hoverboard | Image: Consumer Protection Commission
Isolde Goggin, chairperson of the Competition and Consumer Protection Commission, said: "Our collaboration with colleagues in Customs has meant that these potentially unsafe products were not sold to consumers in Ireland".
"The Commission was concerned that consumers may be at risk should the AC adapter/charger or the battery pack overheat and potentially cause a fire".
"Our investigation is ongoing but at this point we are aware that similar products are on sale here and we are investigating to determine whether these products meet the relevant Irish and EU safety standards".
The goods are set to be returned to their country of origin.