Park-goers are being advised to avoid the water on The Rye after a potentially dangerous algae bloom appeared. 

Wycombe District Council has warned people and pets to keep out of The Dyke on The Rye, High Wycombe, - which has changed colour - "until further notice". 

The colour change is believed to have been caused by a cyanophyta bloom - also known as blue-green algae. 

Bloom and scum forming blue-green algae can produce toxins which can kill wild animals, farm livestock and domestic pets.

Signs are due to go up around the area warning people to stay away from the water. 

Safety fears were raised in August last year after the potentially dangerous blue-green algae was thought to have been spotted in the water. 

Members of wildlife hospital Tiggywinkles in Haddenham were called out to test the waters after a dead swan was discovered in the lake of Wycombe Abbey School, which links to the dyke.

It was later revealed that samples taken by the Environment Agency did not contain the blue-green algae as originally suspected.