"Investigators of the SBU have begun criminal proceedings under part 1 of Article 258 (act of terrorism) of the Criminal Code of Ukraine," Interfax quotes a message from the SBU.
On July 21, in the center of Lutsk, a man seized a bus with about 20 hostages; he has explosives and weapons with him.
The Minister of Internal Affairs of Ukraine Arsen Avakov spoke about the state of the people in the bus seized in Lutsk.
Ukrainian leader Volodymyr Zelensky said that the situation in Lutsk is under control, negotiations are underway with the invader.