Police have closed a stretch of the Magherafelt bypass following the discovery of a suspicious object.
The section between the Castledawson roundabout and Aughrim Road has been closed since 10.45am today.
No homes have been evacuated.
However, drivers travelling between Magherafelt and Moneymore are advised the A31 Magherafelt Bypass has been closed at the Castedawson roundabout and at the Aughrim Road junction. Diversions are in place.
There are no further details at this stage.