TRESPASSERS are being warned to stay out of Chinnor Quarry.

The site's owners insist it is private land and should not be entered without permission.

Police have continued to receive reports of people swimming in the flooded quarry, and say it is ‘extremely dangerous’.

Owners have reminded the public that entering the land without permission from the owner, is an offence and could result in prosecution.

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The landowner has private security to manage the site, supported by Thames Valley Police.