In a dramatic heist straight out of a movie, thieves blew up the entrance of the Drents Museum in the Netherlands early Saturday, making off with a priceless golden helmet and other treasures. The stolen artifacts, including the golden helmet of Cotofenesti from Romania, were part of a special exhibition at the museum.

The helmet, dating back to the fifth century B.C., is a stunning piece of history. Crafted entirely from gold, it weighs just over two pounds and features intricate designs, including scenes of ancient rituals like a lamb sacrifice. Alongside it, three golden bracelets were also taken during the break-in.

The museum’s director, Harry Tupan, expressed shock over the incident, calling it a “dark day” for both the Drents Museum and Romania’s National History Museum, which had loaned the artifacts. He emphasized that nothing like this had happened in the museum’s 170-year history.

The thieves’ bold move involved setting off an explosion to force open a heavy access door. Surveillance footage captured three hooded figures working together before escaping. Authorities are investigating a possible link to a nearby car fire, suggesting the criminals may have used one vehicle to distract while fleeing in another.

This isn’t the first time Dutch museums have been targeted in such dramatic heists. A similar explosion was used in November to steal Andy Warhol prints from a gallery in Amsterdam.

The loss of these artifacts is a blow to cultural heritage, with Romanian officials calling their value “incalculable.” As investigations continue, the question remains: where are these treasures now?