This was announced by the spokesperson for the president of Ukraine Sviatoslav Tseholko on his Facebook page, Censor.NET reports.
"The Security Service has detained a dangerous subversive group of 27 people in Odesa. This was just reported by the head of the SBU to the president. [The security service personnel] seized rocket launchers and layouts of infrastructure facilities in the region, in particular ports. Two detainees are suspected of plotting an assassination of a Verkhovna Rada deputy," Tseholko wrote.