Censor.NET reports citing Kommersant.
According to the news outlet's sources, most of the detained "subversives" were residents of Crimea, while some of them were found with Russian passport.
Kommersant also informed that the detainees had purportedly confessed to collaboration with Ukraine's Defense Intelligence Agency, which had allegedly trained them as subversives.
"According to the detainees' testimony, they were part one of several teams sent by the Ukrainian intelligence agency to Crimea. They denied their intention to carry out attacks against the leaders of the republic or its industrial facilities since the peninsula's tourist industry was their target," the article reads.
The Russian news outlet also reported citing its own sources that the saboteurs were supposed to organize a series of explosions in different resorts. The blasts were to be not powerful enough to kill people but sufficient to trigger panic among tourists and eventually "kill the tourism" in Crimea.
Read more: "Aggressor accused victim of attack. Old KGB methods," - Linkevičius on FSB's allegations
On Aug. 10, the FSB released an official statement about averted terrorist attacks in annexed Crimea "prepared by the Main Intelligence Directorate of Ukraine's MoD in order to target critical life-supporting and infrastructure facilities inside the peninsula."
The Ukrainian MoD refuted the FSB's allegations on the involvement of Ukraine's intelligence in subversive activities in Crimea and called them an attempt of the Russian Federation to justify its aggression in the territory of the annexed peninsula.
The Main Intelligence Directorate of Ukraine's MoD denies the information about an alleged breakthrough of Ukrainian "subversive and terrorist groups" in the territory of Crimea. According to Defense Intelligence representative Vadym Skibitskyi, such allegations by the FSB is one of the elements of incitement and destabilization of the situation in Ukraine: "provocation is an element of the hybrid war which the Russian Federation is waging against us."
President Petro Poroshenko said the Russian allegations were groundless and served as "a pretext for more military threats against Ukraine."
Related materials: Putin's provocation in Crimea