Serious concern has been raised over suspected pollution running into Crana River in Buncrana.
There are claims that the source of the contamination is coming from a stream which enters the river above the Caste Bridge.
Local Councillor Nicholas Crossan has been contacted by members of the Buncrana Anglers Association who noticed a white substance in the water last week.
He has since reported the issue to Donegal County Council and is hopeful that a full investigation will be carried out:
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