Pollution which killed 20,000 fish in Louth identified and stopped Highland RadioLouth fish kill ‘devastating for biodiversity’, minister says RTE.ieWildlife Trust calls for prosecution after agricultural river pollution AgrilandMinister Timmy Dooley says fines ‘not fit for purpose’ as he visits river where agricultural pollution killed over 20,000 fish in Louth Irish IndependentSource of significant fish kill identified in Co Monaghan NorthernSound