Investigations continue to trace foot and mouth in Ireland

Investigations are continuing to establish whether or not foot and mouth disease has crossed the border to Roscommon.

Officials are trying to establish the history of 248 lambs feared to have come from the South Armagh farm where the disease is thought to have struck.

Gardai in Louth and Monaghan have stepped up security on the exclusion zone along the border this morning.

Farmers and vets are also worried at the shortage of stocks of special disinfectant needed to kill the virus.

In Co Wexford, 1,300 sheep are being slaughtered today as a precautionary measure against foot and mouth.

The county is on high alert because of its closeness to Devon in England, where there have been a number of outbreaks.