Russia's Federal Security Service (FSB) said on November 20 that its officers had detained a German citizen on suspicion of involvement in a March explosion that damaged a gas pipeline at a distribution center in Kaliningrad, the capital of Russia's western exclave of the same name. According to the FSB, Nikolaj Gajduk was detained after investigators found 0.5 liters of an unspecified "explosive substance" in his car while he was entering Kaliningrad from Poland. The statement also said that Gajduk had planned to conduct "sabotage acts" at energy facilities in the region, adding that the plan had been "masterminded" by a Ukrainian citizen residing in Germany. Gajduk was charged with terrorism and smuggling explosive substances. The Agentstvo Telegram channel said that Gajduk is a 57-year-old native of Ukraine. German authorities are yet to comment on the situation. To read the original report by RFE/RL's Russian Service, click here.