Watch: Chemical spill suspected to be cause of Cork's River Blackwater fish kill disaster

Test results are due this week to establish the cause of pollution that killed an estimated 50,000 fish in the Munster Blackwater

Killavullen Angling Club chairman, fly-casting instructor, and fishery owner Conor Arnold on the banks of the devastated Munster Blackwater in Mallow, Co Cork. Picture: Dan Linehan

Test results are due this week to establish the cause of pollution that killed more than 50,000 fish in one of Ireland’s best salmon fishing rivers.