Sinn Fein leader Michelle O'Neill has said the party will be "stepping up efforts" to ensure designated special status within the EU as the Brexit process has been triggered.
Speaking on Wednesday Michelle O'Neill said: "Brexit would be a disaster for Ireland, socially, politically and economically.
"It is unacceptable that Tories who have no mandate in Ireland can impose Brexit and a border against our will.
"The people of the North voted against Brexit in a democratic poll.
"There is an onus now on the Irish government to act in the best interests of all Irish citizens and enter the upcoming negotiations to secure designated special status for the north."