Deutsche Bank and its subsidiary Postbank had to temporarily close all of their branches across Germany on Monday morning. It was only in the course of the morning that a spokesman for the financial institution announced that the reason was a malfunction in the alarm systems.
This disruption affected around 550 Postbank branches and around 400 Deutsche Bank branches. The bank did not want to provide details about the nature of the technical malfunction, presumably for security reasons. It's almost a joy when a problem can be resolved so quickly.