Polish officials are investigating a series of small acts of sabotage on rail lines around that country that resulted in massive disruption in the nation’s transportation and industrial operations, with officials investigating the possibility that Russia was behind the attacks, the Washington Post reports.
The Polish rail system utilizes a “radio stop” signal during emergencies that order all train within the region to stop immediately when a series of three tone are broadcast over the communications systems. From Friday evening through Sunday (local time), the signals were broadcast without authorization to all trains, bringing 20 locomotives to a halt in the western end of the state. On Saturday, another incident occurred at a northeastern port. On Sunday, numerous trains were ordered to stop along Poland’s border with Ukraine.
Polish officials are investigating if the signals were broadcast by foreign actors trying to help slow the flow of military supplies to Ukraine. About 80% of arms and ammunition going from Western nations to Kyiv’s forces go through Poland.