Police in Norway arrested an academic working at the University of Tromsø in the Arctic Circle on Monday, on suspicion of secretly spying for Russia, according to Norwegian public broadcaster NRK.Norway’s police told NRK that the man, a researcher at the university, claims to be a Brazilian citizen but they suspect he could be using a false identity and could actually be a Russian citizen.“We have asked that a Brazilian researcher at the University of Tromsø be expelled from Norway as we believe he represents a threat to fundamental national interests,” said Hedvig Moe, Assistant Head, Norwegian Police Security Service, speaking to NRK.Russian authorities have yet to comment on the arrest but in an email to NRK the Russian embassy said they were not aware of the circumstances of the case and described it as part of the “spy mania” in Norway, where “everything Russian … is suspicious and smells of espionage.”The public broadcaster said the case is being treated as an immigration case, and the man’s lawyer said he opposes the detention and “does not agree with the basis for it.” He said he’d received “very little concrete information on the case so far.”In July, Richard Moore, the head of Britain’s foreign intelligence service MI6, told CNN’s Jim Sciutto that since Russia invaded Ukraine in February, European countries have expelled “north of 400 Russian intelligence officers operating under diplomatic cover” across the bloc.The leaks happened just before the ceremonial launch of the Baltic Pipe carrying gas from Norway to Poland, a centerpiece of Warsaw’s efforts to diversify from Russian supplies."