Thirteen men have now been charged as part of a nationwide investigation into high-value museum thefts - including from Norwich Castle Museum.

Ashley Dad, 34, of Crowther Road, Wolverhampton, and John O'Brien, 67, of Fifth Avenue, Wolverhampton, are among the latest to have been charged with conspiracy to steal, after a national investigation into high-value museum thefts.

Chinese artefacts and rhinoceros horn were targeted in seven incidents across a four month period - two thefts and an attempted theft from Durham University Oriental Museum and further incidents at Gorringes Auction House in East Sussex, Norwich Castle Museum in Norfolk, the Powell Cotton Museum in Kent, and the Fitzwilliam Museum in Cambridge.

Twelve of the men were arrested last year the thirteenth, Daniel O'Brien, 44, from Cambridgeshire, was arrested this week and appeared at Birmingham Magistrates Court today where his case was sent to Birmingham Crown Court on December 1. He was remanded in custody.

The other 12 have been bailed to appear at Birmingham Magistrates Court on November 25.