The department of Agriculture will slaughter 12 to 14 cattle at a farm in Co Tipperary today.
The animals at Leugh, outside Thurles, which are believed to have originated in Northern Ireland, will be transported from the farm to a slaughterhouse, where they will afterwards be rendered, the Department of Agriculture confirmed yesterday evening.
"This is because the animals were not properly identified," said a spokesman for the Department, who added that only the animals under investigation would be slaughtered.
"There is no foot-and-mouth issue here at all. It is purely the misidentification of animals."
Meanwhile the fate of a small herd of 12 cattle at another farm at Barnane, outside Temple more, remained in doubt. The spokesman for the Department could not confirm if they would be slaughtered.
He said officials would make their decision today.
The Department treated both cases, at Leugh and Barnane, as "misidentification issues" last week. It sought to establish the origin of the animals before a decision was made on their fate.
The two Co Tipperary farms were placed under restriction following concerns that some of the animals had originated in Northern Ireland.
Restrictions on leaving and entering the farms will remain until the "all-clear" is given.