An article in the Daily Beast reports that thieves took an axe to smash the glass display cases at the Green Vault housed in Germany’s Dresden Castle this week. In an article in the Straits Times, Green Vault director Dirk Syndram described the break-in as being close to impossible, and expressed surprise at the speed with which the glass on the display case was broken.

“What the security glass supplier told us has not been borne out,” he said in the article. “The assumption had been that it would take 15 minutes with an axe to break it.”

USGlass has reached out to Syndram for more details regarding the glass but have not heard back as of press time.