Ukraine’s counterintelligence service has detained a Russian Federal Security Service (FSB) agent who produced 12 kilograms of explosives intended for terrorist attacks in Kharkiv.

According to Ukrinform, this was reported by the Security Service of Ukraine (SBU).

The investigation found that the suspect received instructions from Russia on how to manufacture two improvised explosive devices (IEDs). The bombs were to be made using 12 kilograms of explosive material that he was instructed to produce himself and equip with mobile phones for remote detonation.

The finished devices were allegedly intended to be planted in central Kharkiv, after which the agent was to report back to his FSB handler.

Russian operatives also reportedly planned to detonate the devices during peak hours, when large numbers of civilians would be present on the streets of the city.