Censor.NET reports referring to the Defense Ministry press service.
"This is not for the first time that the Russian secret services are trying to justify their criminal actions during the detention of Ukrainian citizens by tales about non-existing saboteurs and spies.
"Although Roman Sushchenko has nothing to do with the Ministry of Defense and the Armed Forces of Ukraine, the defense authority supports the demands of the civilized civil society with respect to the immediate release of the wrongly detained Ukrainian citizen," the statement reads.
Earlier, members of Moscow's Public Monitoring Commission found Ukrinform news agency correspondent Roman Sushchenko in Lefortovo prison. The Lefortovo court of Moscow arrested the journalist on charges of espionage (article 276 of the Criminal Code of the Russian Federation) for two months.
Later, Ukraine's Information Policy Ministry confirmed the detention of Sushchenko. The ministry said its legal department was collecting necessary information on the circumstances and reasons for the detention.
In turn, the FSB claims Ukrainian journalist Sushchenko is an agent of the Main Intelligence Directorate of Ukraine's MoD.
Related materials: Ukrainian hostages in Russia