A road has been closed in Monaghan following the emergence of a nine-metre sinkhole close to Magheracloone, which suffered severe subsidence in September.
The sinkhole is located 35 metres from the LP4900 road at Drumgossatt and was found on land owned by Gyproc, a plaster manufacturer.
It was discovered during ongoing monitoring of the Drumgossatt mine workings.
However, the company says this new sinkhole is "entirely separate" from the subsidence at Magheracloone GAA club three months ago.
An independent engineering report published by the Department of the Environment earlier this week confirmed that the September sinkhole was caused by water being pumped into a disused mine.
The Engineering firm Wardell Armstrong (WA) said that this water submerged 12-metre high pillars that had been formed during historical mining, causing them to crack and collapse in a domino effect.
It said the collapse was contained by larger, static pillars.
As part of the investigation, WA checked previous geo-technical modelling carried out by a firm working for Gyproc, on sections of the R179 and L4900 roads, which had been closed following the incident.
It found that "large scale movement on the surface outside the main subsidence area was unlikely" and that the support of the two roads was "intact and robust".
Since the new discovery was made yesterday, Monaghan County Council has now closed the LP4900 road at Drumgossatt, Magheracloone, as a precautionary measure.
Local diversions are in place.
The R179 Regional Road between Carrickmacross and Kingscourt is unaffected and remains open.
Gyproc says it will be carrying out "geo-technical investigations" close to the road over the coming weeks. This will include drilling close to the road.
A spokesperson for the Department of the Environment has said the modelling carried out on the local road, the LP4900, demonstrated that the road way was stable.
No major ground subsidence has occurred on the road and surface monitoring of the road has not shown any signs of subsidence that could be attributed to an underground collapse, the spokesperson said.
Local Councillor Colm Carthy has said that a member of Monaghan County Council's executive has been liaising with local residents and the local school to discuss the issue.
He has requested a special meeting with the residents.
The Sinn Féin councillor said: "I have been speaking to some residents and they are livid. They want some action to avoid the close of the road because of the inconvenience it will cause."
Additional reporting Laura Hogan
