Hemlington Lake, Middlesbrough. (Image: Middlesbrough Council.)
Swimmers and dog walkers are being warned to avoid a lake after potentially toxic algae was spotted.
The Environment Agency is conducting tests on the water in Hemlington Lake in Middlesbrough after blue and green algae were reported.
Residents are being advised to stay out of the water as a precautionary measure while test results come back.
High levels of the algae could make the water toxic to both humans and dogs, especially when ingested.
Middlesbrough Council has warned that all pets should be kept away from the lake.
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