An officer from the counterintelligence department of the FSB of Russia, Vladimir Feshenko, was killed in the Ministry of Defense building. The cause of the murder is reported to be a "domestic conflict with a military officer," according to Deutsche Welle.

The security officer was shot in the head. The suspect in the crime has been detained, and a criminal case for murder has been initiated.

Additionally, a source close to the investigation reported that the shooting may have occurred due to careless handling of a weapon.