Russia's Federal Security Service said on Thursday it had foiled several plots by Ukrainian intelligence services to kill high-ranking Russian officers and their families in Moscow using bombs disguised as power banks or document folders.

On Dec. 17, Ukraine's SBU intelligence service killed Lieutenant General Kirillov, chief of Russia's Nuclear, Biological and Chemical Protection Troops, in Moscow outside his apartment building by detonating a bomb attached to an electric scooter.

An SBU source confirmed that the Ukrainian intelligence agency had been behind the hit. Russia said the killing was a terrorist attack by Ukraine, with which it has been at war since February 2022, and vowed revenge.