Residents were left scratching their heads after passing a Leicestershire river to find that it had been turned bright blue.
Parts of the River Sence, which runs from Charnwood Forest and Coalville to Hinckley, were found by locals to have suddenly turned an unnatural shade of blue.
Steph Bickerton, a resident from Coalville, was sent photographs of the neon-coloured waterway by her 11-year-old daughter, Lucie, on Monday, April 24 and initially believed the girl was pulling her leg.