OVER 1,000 fish were killed because of pollution on the Ollway Brook near Llansoy, Monmouthshire.

Officers from Natural Resources Wales are now investigating the incident that led to large amounts of trout, eel and lamprey dying.

A spokesman for the organisation said that the suspected source of pollution was identified and stopped, but low levels of oxygen in the water meant that fish there remained in distress.

The spokesman said: “We are continuing to monitor the environmental impact of this incident and are currently aerating the brook to prevent further fish deaths.

“We’ll be monitoring the river closely over the coming days to ensure that the oxygen levels in the water are high enough and that no more fish are killed.”

He urged anyone who notices fish in distress in the area to call the 24-hour pollution reporting line 0800 807060.

Natural Resources Wales brings together the work of the Countryside Council for Wales, Environment Agency Wales and Forestry Commission Wales, as well as some functions of Welsh Government.

Its purpose is to ensure that the natural resources of Wales are sustainably maintained, enhanced and used, now and in the future.