German police and intervention services cordoned off a transformer station in Ganderkesee, Lower Saxony, due to suspicious circumstances. ^[1] Police have been investigating a substation in Ganderkesee, Lower Saxony, since early morning on September 4, 2026. ^[2] Police in Germany discovered a mobile firework launcher aimed at a transformer station in Dormagen, located between Düsseldorf and Cologne. ^[3] A police helicopter flew over the transformer station in Ganderkesee while police blocked access to the wider area. ^[4] A similar incident occurred in Dormagen, North Rhine-Westphalia, where a passerby discovered suspicious devices near a transformer station. ^[5] The Federal Agency for Technical Assistance was present at the scene in Ganderkesee, using spotlights to illuminate the wider area. ^[6] A police spokesperson stated that a helicopter was deployed to the substation in Ganderkesee during the investigation. ^[7] German police officially classified the incident in Dormagen as a sabotage attempt and placed security services on high alert. ^[8] Police deployed a helicopter and a large security perimeter to a power station in Ganderkesee near Bremen, though no fire or immediate danger was reported. ^[9] Police suspect a connection between the recent attacks in Dormagen, Ganderkesee, Jänschwalde, and Bergheim, but have not yet detained any suspects. ^[10] Police patrols were deployed to the Ganderkesee substation following a specific finding made by officers on the scene. ^[11]