
Russiasaid on Monday it expelled aJapanesejournalistlast month for trying to obtain secret information related tomilitarycapabilities in theRussian Far East, theRIAnews agency reported.
The expelledjournalistworked for Japan's Kyodo News, the agency said on Tuesday, denying the accusation of attemptedespionage.
Kyodo did not identify the reporter but said he was detained on December 25 in Vladivostok and released after about five hours of questioning.
The reporter was told to leaveRussiain 72 hours, Kyodo said.
"For safety reasons, he left the country the following day. It is our understanding that he was engaged in standard reporting activities," Kyodo said in an emailed statement.
Russia's foreign ministry summoned aJapaneseembassy official to make an official diplomatic protest over the incident,RIAreported.
Japan's Ministry of Foreign Affairs said it could not comment on the matter.
Ties between Japan andRussiahave been strained for decades by a territorial dispute over a chain of islands in the Pacific.
Known inRussiaas the Southern Kuriles and in Japan as the Northern Territories, the islands were seized by the Soviet army in the waning days of World War Two.
The dispute has preventedRussiaand Japan from signing a formal peace treaty and developing their relations.
"TheJapanesecitizen was detained byRussian law enforcement officers in Vladivostok on December25, 2019 trying to receive secret materials aboutRussia'smilitarypotential in the Far East,"RIAquoted theRussian foreign ministry as saying.
The announcement came two days afterJapanesetelecommunications firm SoftBank Group Corp said one of its former employees had been arrested on suspicion of leaking company information.
The former employee is suspected of passing information toRussia's trade mission in Japan in exchange for money, the Nikkei newspaper reported, citing the police.
A person familiar with Kyodo's thinking saidRussia's announcement seemed to be "revenge for SoftBank."