Northamptonshire Police is asking the public to keep an eye out for illegal raves and suspicious activity this weekend.
A police spokesman said raves can be disruptive and difficult to clear once they are established, so it is vital people tell police if they are concerned about any suspicious behaviour.
The spokesman said: “We want to remind people, especially those in rural communities, to be alert to any suspicious activity.
“We’re often alerted to raves by people calling us to complain about a sudden increase in traffic and anti-social behaviour as people arrive at a venue.
“I would also urge people to be on the lookout for anything out of the ordinary in their community, no matter how trivial it may seem.
“In many cases those people who are looking to set-up a rave will visit the proposed site a couple of days before the event and I would urge anyone who spots any suspicious activity in their village, along a country road or around farm land to let us know.”
People are urged to contact police if they notice the following:
Posters or messages advertising a rave
Cropped bolts on a gate
People in cars or vans stopping to look into a field or climbing over a fence into a field
Flattened or disturbed hedgerows
Anyone acting suspiciously
Members of the public can report suspicious activity via the ‘Do it online’ button at www.northants.police.uk or by calling 101.