German Authorities Investigate Another Power Grid Attack

Maintenance workers Jan. 6 on the site where an arson attack a cable bridge in Berlin caused a massive power failure in southwestern districts of the German capital.

Photographer: Odd Andersen/AFP/Getty Images

German prosecutors are investigating a failed attack on a substation near Düsseldorf, in the west of the country, days after a similar incident triggered a power blackout in Berlin.

Police started a probe after a letter accepting responsibility from the radical left-wing group known as Kommando Angry Birds was published on the Indymedia platform on Jan. 5, Attorney General Wolf-Tilman Baumert said.