Police carry out high visibility patrols in Milton Keynes to stop knife crime
They have also carried out two weapons sweeps of the area, which many people feared would be a haven for gangs and crime.
So far no weapons have been found, which is "good news", say police.
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Hide AdThey are posting updates on their social media pages of officers patrolling the fun fair.
A spokesman said: "A weapon sweep was carried out again today around Campbell Park fun fair by #MKNHPT and no weapons were found, which is a good sign.
"Officers and PCSOs continue to patrol the fair in Campbell Park so everyone can have a safe and enjoyable time."