KYIV -- Ukrainian Security Service (SBU) officers have searched the office of Russian state news agency RIA Novosti's branch in Ukraine and detained a journalist, accusing the media outlet of participating in a "hybrid information war" against Kyiv.
The law enforcement actions on May 15 drew a swift and angry response from Russia, with President Vladimir Putin's spokesman saying journalist Kirill Vyshinky's detention was "disgraceful and scandalous" if it was related to his work.
Colleagues at RIA Novosti-Ukraina said that Vyshinsky, a Russian citizen, was detained near his home in Kyiv. SBU spokeswoman Olena Hitlyanska confirmed to RFE/RL that Vyshinsky was detained but gave no details.
Hitlyanska wrote earlier on Facebook that the news agency's office in the Ukrainian capital was searched.
Hitlyanska wrote that the SBU and prosecutors had "uncovered the activities" of a Russian-controlled network of media outlets that has been "used by the aggressor country to conduct a hybrid information war against Ukraine."
She said that more details would be made public later.
Ties between Moscow and Kyiv have been severely damaged by Russia's seizure of Crimea in 2014 and its support for separatists in a war that has killed more than 10,300 people in eastern Ukraine.
The Ukrainian government is wary of Russian media and entertainment, accusing Moscow of distributing disinformation aimed at sowing tension and destabilizing the country.
Kyiv has banned more than a dozen Russian television channels since 2014, accusing them of spreading propaganda.
Putin's spokesman, Dmitry Peskov, said that the SBU's actions "contradict all norms and rules" and "deserve the harshest condemnation from international organizations."
Foreign Minister Sergei Lavrov said that Russia was awaiting "a principled announcement" from the Organization for Security and Cooperation in Europe's (OSCE) media-freedom representative.
Lavrov said it was "far from the first time" that the Ukrainian authorities had "restricted the activities" of Russian journalists in Ukraine.
In Vienna later on May 15, the OSCE representative on freedom of the media raised "serious concern" over the raid, and called on Ukrainian authorities to "refrain from imposing unnecessary limitations on the work of foreign journalists."
"The fight against propaganda must not fall short of international standards and should not represent disproportionate interference in media activities," Harlem Desir said in a statement.
Ukraine drew criticism from media freedom advocates in 2017 for the deportation of a correspondent for Russia's state-run Channel One television.