Irish police seized a substantial quantity of firearms and a suspected explosive device near the border with Northern Ireland on Friday as part of an investigation into the activities of militant Irish nationalist groups there.

The searches took place near the County Louth village of Omeath, which lies on a small peninsula separating part of the border between European Union-member Ireland and the British province of Northern Ireland.

The currently seamless border will become the United Kingdom’s only land frontier with the EU when it leaves the bloc, scheduled for the end of March.

Read more: Reuters