English Heritage says there have been a number of incidents of people illegally using metal detectors and taking artefacts from land at properties it owns in Wiltshire.
It's thought most are searching for Iron Age artefacts.
More top news
The rare lemur baby was born at Cotswold Wildlife Park and captured on camera
The contents of the letter to the European Union signaling Britain's intent to leave the EU have been revealed.
Wednesday afternoon's weather for the west of the region