In September there was an attack in Berlin. Unknown people set a power pylon on fire. This happened in the area Karow. Many people had no power after that. Trains could also not run.
Therefore, there was a raid on Tuesday. The police searched 3 homes. These homes are in Berlin and Brandenburg. Investigators look for proof for the act. They suspect left-wing violence behind the attack.
A group claimed responsibility for the act. The group is called Vulkangruppe. The police now check all clues. There are no arrests yet. But officers seized computers and cell phones.