Island Roads has said the graffiti has been removed from all road signs and workers are now cleaning bus shelters.
As previously reported, graffiti tags appeared across parts of the Isle of Wight overnight on Tuesday (12).
Fairlee Road, Wootton and Fishbourne were among the areas targeted, with drivers noticing the graffiti yesterday morning (Wednesday).
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Bus stops, walls, fences and signs were daubed with a star shape with the number 4 and the phrase, 22 Crew.
In response to the graffiti, Island Roads and the Isle of Wight Council had issued a joint statement confirming they were assessing the type of clean-up required.
Meanwhile, Southern Vectis slammed the “vandalism”, telling the County Press it was “extremely disappointing” for both the company, and its customers.
Simon Moye, operations manager, said: “This act of vandalism is extremely disappointing – for us and, I’m sure, for our customers.
“The graffiti has been reported to Island Roads, who are responsible for the bus stops on behalf of Isle of Wight Council, and they will take appropriate action.”
Now, Hampshire and Isle of Wight Constabulary has said it is aware of the graffiti.
It is asking anyone with information to contact police on 101. A spokesperson said reports will then be looked at with a view to identifying any offenders.
Island Roads said: “We are continuing to clean up the recent graffiti in the Whippingham/Fairlee Fishbourne area.
“All signs done and now working on the bus shelters.”