Details have emerged of threats made to civil servants in Northern Ireland by dissident republican paramilitaries.

The Continuity IRA threatened to target customs officers and staff from the Driver and Vehicle Agency for dealing with police in Co Fermanagh, where last month the same group tried to kill two police officers.

The threat was issued in a statement read by a masked man at the unveiling of a monument last Saturday near the Co Fermanagh border in Mullan, Co Cavan.

Northern Ireland Environment Minister Sammy Wilson, responsible for the DVA, condemned the threat and said it put the entire community at risk.

'This threat is simply an attack on road safety, DVA staff who are ordinary people going about their work and it therefore puts the whole community at risk,' Mr Wilson said.

In June the Continuity IRA claimed responsibility for planting a landmine near the Co Fermanagh village of Roslea in an attempt to murder PSNI members.

Two officers escaped with minor injuries when the device only partially exploded.

It is understood dissident republicans attended the unveiling of the memorial in Co Cavan.

One of the masked men is understood to have read a statement claiming to represent the South Fermanagh Command of the Continuity IRA.