Thieves used explosives to blast their way into the Drents Museum in Assen, which was hosting an exhibition of priceless Romanian jewellery made from gold and silver. They left with three Dacian spiral bracelets and the exhibit's central piece - the strikingly decorated Helmet of Cotofenesti, which was crafted almost 2,500 years ago.

Thieves responsible for the Drents Museum heist left with a gold Coțofenești helmet and three Dacian royal bracelets, the museum said.