More than 500 trout and other fish found dead in 'important spawning river' in Kildare

The reported fish kill in the River Rye in Leixlip, Co Kildare. It is said that it will "take years" to recover in such a sensitive spawning and nursery site for salmon and trout. Picture: Inland Fisheries Ireland

Authorities have launched an investigation after more than 500 fish were killed along a 2km stretch of a Kildare river.

Inland Fisheries Ireland (IFI) said it could not comment on an active investigation into the incident on the River Rye Water in Leixlip, but did describe it as a "serious fish kill".