Inland Fisheries Ireland (IFI) is investigating a significant fish kill in West Dublin in which early indications suggest more than 500 fish have died.
The incident occurred on the River Tolka in near Damastown at the Dublin/Meath border.
Fish mortalities were observed over a 2km stretch of the river. Species of fish discovered dead include brown trout, eel, stickleback, lamprey and minnow.
Fisheries staff received a hotline report on Saturday (1 August) and responded immediately to attend the scene and investigate the incident.
Water samples were taken from the river and have been sent for analysis.
IFI is working with other government agencies in line with the new national interagency protocol for investigating significant fish kills.
An interagency group was convened under the protocol on Sunday (2 August) to enable rapid coordination during the initial response to the incident. It included representatives from the Environmental Protection Agency, Fingal County Council and the National Parks and Wildlife Service.
As a result of the progress made, a definite line of inquiry has been established and the group has completed its role.
