A spokesman said: “We are fully committed to the Good Friday Belfast Agreement and to the proper implementation of the protocol on Ireland and Northern Ireland – protecting the gains of the peace process, protecting and maintaining stability and avoiding a hard border on the island of Ireland.”
EU and UK officials are due to meet this week to discuss potential solutions for ending the tensions in the region.
Customs officials were forced to withdraw from Northern Ireland ports after threats to their safety.
To keep the Irish border open, the area effectively remains part of the EU's single market and some checks are now made on some products arriving from the rest of the UK.