Probe as 1,000 fish die in brook

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The cause of the death of nearly 1,000 young salmon and trout fry in a tributary of the River Wye in Powys is being investigated.

A 600m stretch of the Rhyd Hir brook is affected on the outskirts of Rhayader.

Environment Agency Wales officers have collected samples of the dead fish and sent them to a laboratory for a post mortem examination.

Water samples have also been taken and sent for analysis. No impact has been detected on the main river.

A spokesman for the agency said initial survey results suggest the invertebrate species on which the fish feed have largely been unaffected.