A sign along <a href="https://en.wikipedia.org/wiki/Ryde_Pier" class="extiw" title="en:Ryde Pier">Ryde Pier</a>, <a href="https://en.wikipedia.org/wiki/Ryde" class="extiw" title="en:Ryde">Ryde</a>, <a href="https://en.wikipedia.org/wiki/Isle_of_Wight" class="extiw" title="en:Isle of Wight">Isle of Wight</a>. It is asking for witnesses after a violent attack a few months earlier on 23 March 2010. The police have used a sign that would usually be used at a car accident seen, hence "Crash" is visible at the top. Even more bizarrely, an attempt has been made to cover it up using "Biohazard" warning tape.
<a href="//commons.wikimedia.org/wiki/User:Arriva436" title="User:Arriva436">Arriva436</a>
CC BY 3.0
<span class="int-own-work" lang="en">Own work</span>