Shariqua Ahmed/BBCThe Environment Agency found elevated levels of ammonia and low levels of oxygen in the dykeThe former Environment Secretary Steve Barclay has questioned in Parliament why there has been no prosecution yet, after hundreds of dead fish were found floating in a dyke.
About 900 fish died because of elevated levels of ammonia and low levels of oxygen at Kings Delph, near Whittlesey, Cambridgeshire, in September 2024.
In response to Barclay, who is the MP for the area, the Water Minister Emma Hardy said she was "happy to look into that".
The Environment Agency (EA) and Anglian Water, which is responsible for the Dyke, have been contacted for comment.
Residents living by Kings Delph said they felt angry and "sick" at the huge number of fish deaths, the foul odour and discoloured water.
At the time, the EA said Anglian Water's pumping station discharged for 23 hours after a pump failed.
It was classed as a "category one" incident, meaning it had a "major effect" on either water quality, human health, conservation or businesses.
Barclay questioned why "no prosecution has been made".
He asked the secretary of state to explain why, and Hardy told him she would look into it and get back to him in writing.
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