Thousands of fish have died in a lake in Cheltenham in what the Environment Agency has described as a mass suffocation.
Pittville Lake is part of the town's largest ornamental park.
People are now being warned to stay away from the water.
Katie Rowlett reports:
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Pupils at Hayle Community School launched the pasty as part of a project they are undertaking.
After a dry end to the day, it will grow colder overnight with a light breeze.
It will turn chilly tonight with largely clear skies and light winds.