Thieves snatch diamond necklace worth more than £3,000,000 before ‘calmly walking out’

A manhunt has launched for the two suspects captured on CCTV after a jewellery heist in Vienna (Picture: LPD Wien)

Two thieves walked into a museum and grabbed a rare diamond necklace encrusted with more than 600 diamonds in a brazen jewellery heist in Austria.

The duo were so confident they didn’t bother to wear masks, instead waltzing in after buying tickets for the exhibition at the Vienna Museum of Applied Arts (MAK).

The suspects headed for the Van Cleef and Arpels diamond and platinum necklace on display despite security cameras.

Bearing more than ...