ACPO lead on anti-social behaviour Deputy Chief Constable Simon Edens said:
"While there is no direct evidence of an increase in anti-social behaviour during Halloween and Bonfire night, many people may feel more vulnerable to harassment at this time of year.
"Anti-social behaviour is defined as any aggressive, intimidating or destructive activity that damages or destroys another person's quality of life. Examples of the kind of anti-social behaviour people may experience over this period include the throwing of eggs or fireworks at people and buildings, fires being lit in inappropriate places and people behaving aggressively and causing disturbances.
"Many police forces undertake preventative work over this period: increasing patrols, working with the fire service, schools and local businesses providing advice about enjoying a safe Halloween and Bonfire Night. Some forces are also providing special posters for the public to download and display to either welcome or dissuade trick or treaters. Look at your local Force's website to find out what is happening in your area.
"We want people to go out and enjoy the season's activities but they must ensure that they do not cross the line into anti-social behaviour and are mindful of the impact that their activity may have on more vulnerable people in the community.
"If people experience behaviour that makes them feel harassed, alarmed or distressed, they should report it to the police using 101 for a non-emergency or 999 for an emergency."