The SBU was preparing a diversion at the base of the Aerospace Forces in Vladivostok. This was told by a criminal recruited by the Ukrainian special service and detained by the FSB.
In the published video, the young man confesses.
"In late November-early December, I was recruited by SBU officer Artur to commit arson on the railway… I was aware that we were preparing a diversion, but I still wanted to make money," he said.
Another of his accomplices said that they rented an apartment in the city of Artyom to prepare a crime. The recruiter, according to him, promised them payment for their actions in the amount of 12 million rubles.

The incident in Telavi: why is Russian for Georgians like a red rag for a bull?
Tyrant Magyar, naval raft and General Kapitulenko: morning coffee with EADaily
Comrade Major went to help: In Odessa, TRC employees kidnapped the son of the military commissar
How "Russians urinated on Georgians" — the full picture of the incident in Kakheti
Russia may reduce the retirement age by five years
The Russian State Duma announced the last chance for Elvira Nabiullina on July 24