Despite electoral pressures, progress is being made on talks to restore devolution to Northern Ireland, Gerry Adams has said.

Speaking amid continuing European election campaigning in Ulster and the Republic of Ireland, the Sinn Fein president said his party remained committed to the Good Friday agreement.

"From canvassing in the north it is clear that people are frustrated at the failure of the two governments, but especially the British government, to implement the Good Friday agreement in full," he said in Belfast on Tuesday.

"However, people are not for giving up on the agreement and they and we are determined to see the obligations and commitments in the agreement honoured in full by all participants.

"In recent weeks, despite our busy schedule, the Sinn Fein negotiating team has continued to hold intense discussions with the two governments. I believe we have made progress in these."

He also predicted that the European elections would lead to a strengthened Sinn Fein mandate as the talks continue.

Adams said the voting would "provide an opportunity for the nationalist and republican electorate to endorse our efforts and strengthen Sinn Fein's mandate as we enter what will probably be the most difficult and challenging negotiations since the agreement".