This was announced by SBU Head Vasyl Hrytsak at a briefing, Censor.NET reports citing Ukrainski Novyny.
Hrytsak said a number of people were detained for alleged plotting of activitites aimed at discrediting Poroshenko. The events were to take place in Roshen stores and the company's factory in Kyiv.
They allegedly planned to have 400 protesters invade the plant under the pretense of demolishing a Karl Marx monument. The fake protesters wearing military uniform of Ukrainian soldiers were allegedly to protest against the president in Roshen stores.
"The protests were to be dubbed 'Candy riots in Roshen stores'," Hrytsak said.
SBU found that the activity was orchestrated by Russian secret services together with Ukraine's Kliuiev, former Party of Regions MP Volodymyr Oliinyk, and Anti-Maidan leaders Yurii Kot and Oleksandr Zinchenko.
The goal was to destabilize situation in Ukraine and discredit it globally, SBU head said.
"When the vertical of power is destroyed in Ukraine, Russia will resort to open aggression," Hrytsak said.