Local authorities and Dyfed-Powys Police are asking farmers, local landowners and community councils in the area to be on alert over the forthcoming Bank Holiday weekend for warning signs of any illegal events such as raves planned for their land.

While there is no specific evidence of an event being planned, social networking has made it easier for organisers to spread the word in relation to events and rave attendance numbers can grow quickly.

Farmers, landowners and local communities are encouraged to report any suspicious activity immediately to the police, especially if there are unusual numbers of vehicles - especially camper vans, vans or trucks - seen in the locality.

Police say illegal trespassers may recce sites in advance of any rave, or people may approach landowners and ask around for land availability, in the guise of hiring it for acceptable activities such as gymkhanas or scout camps.

Anyone with concerns should call Dyfed Powys Police by dialling 101.