Hundreds of fish have been killed in the Glore river in Kiltimagh, Co Mayo in what authorities describe as a “serious fish kill incident”.
Over 500 young salmon and trout are estimated to be dead in the river Glore, an important spawning river within the Moy catchment area.
Inland Fisheries Ireland, the state agency responsible for the protection and conservation of freshwater fish and habitats, was alerted to the kill on Friday and is investigating.
The agency has taken samples of water and fish from the scene for scientific analysis to determine what caused the kill.
To report fish kills, you can call Inland Fisheries Ireland on 1890 34 74 24.