A 51-year-old man from West Sussex has been arrested by police investigating the alleged plundering of valuable archaeological artefacts.

Police said some of the artefacts were suspected of being stolen by "nighthawking" from an undisclosed site in the Chichester area and elsewhere recently.

The items found so far include medieval and Roman coins, ivory and silver, and one gold Iron Age coin, brooches, buttons and horse equipment of similar ages.