Overview

• Sirens sounded across Hamburg at about 9:35 p.m., prompting widespread alarm and a surge of emergency calls.
• Authorities confirmed the citywide activation was accidental and stressed it was not an air-raid alert.
• A long, continuous second signal indicated the all-clear following the mistaken activation.
• Emergency call lines were overwhelmed, and police urged residents not to dial the emergency numbers about the sirens.
• Police communicated the clarification on X and asked users to share it, drawing criticism over the absence of radio announcements.