Milton Keynes water safety sign vandalised in just two days
Police have urged residents across MK not to tamper with or vandalise safety signs put near the city's rivers and lakes.
The pictures above were taken just days apart.
The sign warns visitors that the water is deep and under no circumstances should anyone swim near the Blue Lagoon in Bletchley.
Two years ago a young woman died after becoming submerged in the Lagoon - she was rushed to hospital but sadly died.