The Russian Federal Security Service said on the 28th that the agency thwarted an assassination attempt planned by Ukraine against a senior Russian official and a military blogger, and arrested a Russian citizen suspected of being involved. The Russian Federal Security Service said that the suspect used the communication software “Telegram” to establish contact with officials of the General Intelligence Service of the Ministry of Defense of Ukraine and obtained an explosive device disguised as a portable audio device at a secret location in Moscow according to the other party's instructions. The explosive device contains bearing balls, and the power is equivalent to 1.5 kg of TNT explosives. The Russian Federal Security Service did not specify any other information about the suspect, nor did it release the specific identity of the assassination target. The Ukrainian side has yet to respond.