"Radio Hackers Cause Chaos on Polish Trains"

Polish police have arrested two suspects, including a police officer, on charges of disrupting railway traffic by transmitting a radio signal that tricks trains into emergency stops. The suspects broadcasted an emergency signal on frequencies used by train operators, causing disruptions in three Polish regions. The incidents have prompted calls for an investigation, with opposition politicians questioning the involvement of a police officer. The motives of the accused are still unknown, but the incidents have highlighted a long-standing security problem with railway communication systems in Poland.