The counterintelligence of the Security Service of Ukraine (SBU) has neutralized a large-scale agent network of Russia's FSB which was preparing enemy missile and drone attacks on six regions of Ukraine.

"As a result of a multi-stage special operation, nine Russian agents were simultaneously detained in Dnipro, Zaporizhia and Sumy, as well as in Donetsk, Odesa, and Kirovohrad regions," the SBU said on its website on Monday.

According to the special service, the agents collected the coordinates for enemy strikes against the defense forces and critical infrastructure of Ukraine.

"The enemy group included two officials. One of them worked for Dnipro City Council and another one – for Yuzhne Town Council in Odesa region. They detected the locations of air defense and key electrical substations to adjust Russia's attacks on the territories of both regions. Another two agents scouted the fortified areas and fire positions of the Ukrainian Armed Forces' heavy artillery in the vicinity of Pokrovsk and Chasiv Yar. They accomplice collected information about areas of concentration of the defense personnel and military equipment in Kurakhove, Donetsk region," it said.

Among the Russian agents, there were two managers and a university student who recorded the movement of Ukrainian special trains, as well as a former police officer who provided the occupiers with data on the consequences of Russia's attack on a Ukrainian hydroelectric power plant.

"The defendants were noticed by FSB due to active commenting in the pro-Kremlin Telegram channels. After remote recruitment, the traitors contacted their Russian curators through anonymous chatbots in a popular messenger," the SBU said.

SBU investigators have notified the detainees of suspicion under Part 2 of Article 111 of the Criminal Code of Ukraine (high treason committed under effect of martial law). All of the enemy agents are held in captivity.