More than 80 horses have been seized and impounded in Cork in an operation involving officials of the Department of Agriculture, Cork City Council and gardaí.

The operation, in the Hollyhill area of the city, follows ongoing concerns over animal welfare and problems with stray horses on public property and roads.

The carcasses of four horses, which were dumped in the area, have also been located.

It is understood that some of the seized horses may have to be destroyed.

More than 3,000 horses have been impounded throughout the country so far this year.

The impounded horses will only be released when the owners produce passports for them and show that they have access to lands registered for grazing horses.

In a statement, the Department of Agriculture, Food and the Marine said there were significant numbers of horses grazing illegally on NAMA and local authority land on the northside of Cork city.