Austrian police are searching for two men who stole a 200-carat platinum necklace, adorned with 673 diamonds, from the Museum of Applied Arts (MAK) in Vienna on Thursday afternoon. The suspects purchased tickets to the exhibition before smashing a glass display case with a hammer and fleeing with the historic jewelry during opening hours.

Authorities released security camera images of the alleged perpetrators, highlighting a recent surge in high-profile thefts from cultural institutions across Europe. The MAK museum confirmed the piece was taken from a special exhibition featuring over 300 works by French designers Van Cleef Arpels, which had been running since June.

Investigators believe the theft might have been a "contract job" orchestrated by a criminal organization, according to the Kronen newspaper. No one was injured during the incident, despite several witnesses being present in the exhibition room at the time of the smash-and-grab.

The stolen necklace once belonged to Queen Consort Nazli of Egypt. She was famously pictured wearing it at the 1939 wedding of her daughter, Fawzia, to Mohammad Reza Pahlavi, who would later become the Shah of Iran. The historical significance and immense value of the piece have drawn considerable attention.

In 2015, the necklace was sold at a Sotheby's auction in New York for $4.3 million. Its recovery is now a priority for Viennese law enforcement, who deployed search teams and tracking dogs in the city center following the brazen theft.

The Museum of Applied Arts has not yet released a statement regarding enhanced security measures following the incident, but the theft raises questions about the protection of valuable artifacts on public display.

Police are appealing to the public for any information that could lead to the identification and apprehension of the suspects. The direction of their escape and their current whereabouts remain unknown.

This incident adds to a growing list of audacious art and jewelry thefts across Europe, prompting concerns about the security of cultural heritage in the region.