Northern Ireland’s Agriculture Minister has confirmed that a fish kill in a tributary of the River Moyola last week was caused by a spillage of 30,000 gallons of slurry, as BBC News reports.

The incident on the Grange River in Co Derry on Thursday 21 May affected a significant stretch of water near the village of Desertmartin, according to a local angling club.

It’s understood that the spillage originated from an over-ground slurry tank, but the circumstances are still being investigated.

The incident comes just weeks after anglers in Co Armagh expressed anger at the killing of more than 1,000 wild brown trout by pollution in the Glenavy River.